Update app.py

app.py

@@ -39,8 +39,8 @@ def search_arxiv(search_term:str)-> str: #it's import to specify the return type
     Args:
         search_term: A keyword or phrase used to find relevant articles on arXiv.
     """
-    formatted_search_term = search_term.replace(" ", "+")
-    url = f'http://export.arxiv.org/api/query?search_query=all:{formatted_search_term}&sortBy=lastUpdatedDate&sortOrder=descending'
+    # formatted_search_term = search_term.replace(" ", "+")
+    url = f"http://export.arxiv.org/api/query?search_query=all:\'{formatted_search_term}\'&sortBy=lastUpdatedDate&sortOrder=descending"
     data = urllib.request.urlopen(url)
     arxiv_result = data.read().decode('utf-8')
     return f"The most recent article on {search_term:} is: {arxiv_result}"