diff --git a/api/controller/EmbeddingSearch.py b/api/controller/EmbeddingSearch.py
index 0984ecd..0545246 100644
--- a/api/controller/EmbeddingSearch.py
+++ b/api/controller/EmbeddingSearch.py
@@ -87,7 +87,7 @@ class EmbeddingSearch:
                     "status": -2,
                     "message": error_msg,
                     "error": {
-                        "code": "page_not_found",
+                        "code": "page-not-found",
                         "title": page_title,
                     },
                 })
@@ -115,7 +115,7 @@ class EmbeddingSearch:
                     "status": -4,
                     "message": error_msg,
                     "error": {
-                        "code": "page_index_running",
+                        "code": "page-index-running",
                     },
                 })
                 if transatcion_id:
@@ -129,7 +129,7 @@ class EmbeddingSearch:
                     "status": -1,
                     "message": error_msg,
                     "error": {
-                        "code": "internal_server_error",
+                        "code": "internal-server-error",
                     }
                 })
                 if transatcion_id:
diff --git a/service/embedding_search.py b/service/embedding_search.py
index aeff29c..7c41774 100644
--- a/service/embedding_search.py
+++ b/service/embedding_search.py
@@ -283,6 +283,9 @@ class EmbeddingSearchService:
         in_collection: bool = False,
         distance_limit: float = 0.6,
     ):
+        if limit == 0:
+            return [], 0
+        
         if self.page_index is None:
             raise Exception("Page index is not initialized")