Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"huu than roi snippets" » "huu thang roi snippets", "huu thanh roi snippets", "huu han roi snippets", "huu toan roi snippets", "huu than voi snippets", "huu thanh loi 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 than roi 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 than roi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( huu than roi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("huu than roi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.