Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam khang ve snippets" » "nam thang ve snippets", "nam khanh ve snippets", "nam thanh ve snippets", "nam hang ve snippets", "nam khang vi snippets", "nam khang 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: (((("nam khang ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nam khang ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam khang ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam khang ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.