Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"huu khong de snippets" » "huu khang de snippets", "hua khong de snippets", "huu thong de snippets", "huu khong he snippets", "huu khong do snippets", "huu khong ke 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: (((("huu khong de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("huu khong de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( huu khong de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("huu khong de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.