Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu voi da snippets" » "hieu moi da snippets", "lieu voi da snippets", "hieu loi da snippets", "hieu voi dac snippets", "hieu voi dai snippets", "hieu voi dan snippets"
"locating bug code snippets" » "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: (((("hieu voi da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hieu voi da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu voi da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu voi da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.