Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam tang do snippets" » "nam thang do snippets", "nham tang do snippets", "dam tang do snippets", "nam trang do snippets", "nam dang do snippets", "nam tang o 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 tang 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: (((("nam tang do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam tang do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam tang do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.