testing OR on google search

Author: minhle-120

backend/engines/search/google_search.py

@@ -18,7 +18,7 @@ def find_related_documents(self, keywords: List[str]) -> List[str]:
             return ["Error: Google API credentials are not configured."]
 
 
-        query = " ".join(keywords)
+        query = " OR ".join(keywords)
         print(f"--- [ENGINE: Google Search API] Searching for: '{query}' ---")
 
         try: