Perhaps you should try some spelling variations:
"hai duong phi snippets" » "dai cuong phi snippets", "hai phong phi snippets", "hai duong phia snippets", "hai duong thi snippets", "hai duong nhi snippets", "hai duong phi slippers"
"python using a snippets" » "python using a slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("hai duong phi snippets") or ("python using a snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hai duong phi snippets") OR ("python using a snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hai duong phi snippets ) or ( python using a snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hai duong phi snippets") or ("python using a snippets"))) or ("locating bug code snippets"))*.