Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"men tinh voi snippets" » "yen tinh voi snippets", "den tinh voi snippets", "man tinh voi snippets", "men trinh voi snippets", "men tinh doi snippets", "men binh 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: (((("men tinh 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: (((("men tinh voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( men tinh voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("men tinh voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.