Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoa van voi snippets" » "hoa dan voi snippets", "hoang van voi snippets", "hoa phan voi snippets", "hoa van loi snippets", "hoa van noi snippets", "hoa van von 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: (((("hoa van 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: (((("hoa van voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoa van voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoa van voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.