Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu dao voi snippets" » "lieu dao voi snippets", "hieu dac voi snippets", "chieu cao voi snippets", "hieu da voi snippets", "hieu dao noi snippets", "hieu do voi 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 dao voi 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 dao voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu dao voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu dao voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.