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