diff --git a/evonote/indexing/core.py b/evonote/indexing/core.py
index 561e3fd..34720ef 100644
--- a/evonote/indexing/core.py
+++ b/evonote/indexing/core.py
@@ -86,11 +86,12 @@ def get_top_k_notes(self, query: List[str], weights: List[float] = None, k: int
     "show_src_similarity_gui": False,
 }
 
+
 class AbsEmbeddingIndexer(Indexer):
     @classmethod
     def prepare_src_weight_list(cls, new_notes: List[Note], indexing: Indexing,
                                 use_cache: bool) -> (
-    List[List[str]], List[List[float]], List[Note]):
+            List[List[str]], List[List[float]], List[Note]):
         raise NotImplementedError
 
     @classmethod
@@ -177,6 +178,17 @@ def get_similarities(cls, query: List[str], indexing: Indexing,
 
         return similarity, indexing.data["index_to_note"]
 
+    @classmethod
+    def process_note_with_content(cls, notes: List[Note], indexing: Indexing,
+                                  use_cache: bool):
+        raise NotImplementedError
+
+    @classmethod
+    def process_note_without_content(cls, notes: List[Note], indexing: Indexing,
+                                     use_cache: bool):
+        raise NotImplementedError
+
+
 def show_src_similarity_gui(similarity, data, query, weights, top_k=10):
     from evonote.gui.similarity_search import draw_similarity_gui
     top_note_index = np.argsort(similarity)[::-1][:top_k]
@@ -187,49 +199,21 @@ def show_src_similarity_gui(similarity, data, query, weights, top_k=10):
     src_list = [src_list[i] for i in top_note_index]
     draw_similarity_gui(src_list, weights, query, contents)
 
+
 class FragmentedEmbeddingIndexer(AbsEmbeddingIndexer):
     @classmethod
-    def prepare_src_weight_list(cls, new_notes: List[Note], indexing: Indexing,
-                                use_cache: bool):
-
-        notebook = indexing.notebook
-
-        index_to_note = []
-
-        notes_with_content = []
-        notes_content = []
-        notes_without_content = []
-        for note in new_notes:
-            if len(note.content) == 0:
-                keywords_on_path = note.get_note_path(notebook)
-                if len(keywords_on_path) != 0:
-                    notes_without_content.append(note)
-                continue
-            notes_with_content.append(note)
-            notes_content.append(note.content)
-
-        new_src_list_1 = []
-        new_weights_1 = []
-
-        for note in notes_without_content:
-            keywords_on_path = note.get_note_path(notebook)
-            # keep last 1/3 of the keywords
-            n_keywords = min(max(math.ceil(len(keywords_on_path) / 3), 3),
-                             len(keywords_on_path))
-            new_src = keywords_on_path[-n_keywords:]
-            new_src_list_1.append(new_src)
-            weight = np.array([i + 1 for i in range(len(new_src))])
-            weight = weight / np.sum(weight)
-            new_weights_1.append(weight)
-
+    def process_note_with_content(cls, notes: List[Note], indexing: Indexing,
+                                  use_cache: bool):
         break_sent_use_cache = lambda sent: process_sent_into_frags(sent, use_cache,
                                                                     get_main_path())
+        notes_content = [note.content for note in notes]
+        notebook = indexing.notebook
 
         new_src_list_2 = []
         new_weights_2 = []
         n_finished = 0
         with concurrent.futures.ThreadPoolExecutor(max_workers=8) as executor:
-            for note, frags in zip(notes_with_content,
+            for note, frags in zip(notes,
                                    executor.map(break_sent_use_cache, notes_content)):
                 new_src = []
                 new_src.extend(frags)
@@ -239,7 +223,9 @@ def prepare_src_weight_list(cls, new_notes: List[Note], indexing: Indexing,
                 new_src.append(note.content)
 
                 new_src_list_2.append(new_src)
-                weight = np.ones(len(new_src)) / (len(new_src) ** 0.9)
+                # TODO Handle when there are too many fragments. Maybe we should group
+                #  them by clustering
+                weight = np.ones(len(new_src)) / (len(new_src) ** 0.95)
                 new_weights_2.append(weight)
 
                 n_finished += 1
@@ -247,6 +233,52 @@ def prepare_src_weight_list(cls, new_notes: List[Note], indexing: Indexing,
                     save_cache()
 
         save_cache()
+        return new_src_list_2, new_weights_2
+
+    @classmethod
+    def process_note_without_content(cls, notes: List[Note], indexing: Indexing,
+                                     use_cache: bool):
+        new_src_list_1 = []
+        new_weights_1 = []
+
+        for note in notes:
+            keywords_on_path = note.get_note_path(indexing.notebook)
+            # keep last 1/3 of the keywords
+            n_keywords = min(max(math.ceil(len(keywords_on_path) / 3), 3),
+                             len(keywords_on_path))
+            new_src = keywords_on_path[-n_keywords:]
+            new_src_list_1.append(new_src)
+            weight = np.array([i + 1 for i in range(len(new_src))])
+            weight = weight / np.sum(weight)
+            new_weights_1.append(weight)
+
+        return new_src_list_1, new_weights_1
+
+    @classmethod
+    def prepare_src_weight_list(cls, new_notes: List[Note], indexing: Indexing,
+                                use_cache: bool):
+
+        notebook = indexing.notebook
+
+        index_to_note = []
+
+        notes_with_content = []
+        notes_content = []
+        notes_without_content = []
+        for note in new_notes:
+            if len(note.content) == 0:
+                keywords_on_path = note.get_note_path(notebook)
+                if len(keywords_on_path) != 0:
+                    notes_without_content.append(note)
+                continue
+            notes_with_content.append(note)
+            notes_content.append(note.content)
+
+        new_src_list_1, new_weights_1 = cls.process_note_without_content(
+            notes_without_content, indexing, use_cache)
+
+        new_src_list_2, new_weights_2 = cls.process_note_with_content(
+            notes_with_content, indexing, use_cache)
 
         new_src_list = new_src_list_1 + new_src_list_2
         new_weights = new_weights_1 + new_weights_2