Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam khang di snippets" » "nam thang di snippets", "nam khanh di snippets", "nam thanh di snippets", "nam hang di 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 di 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 di snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam khang di snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam khang di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.