Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"huu khang do snippets" » "huu han do snippets", "huu hanh do snippets", "huu khong do snippets", "huu khang voi snippets", "huu khang kho 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 khang do 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 khang do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( huu khang do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("huu khang do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.