Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam do cham snippets" » "nam co cham snippets", "nam do ham snippets", "nam toc cham snippets", "nam dao cham snippets", "nam doi cham snippets", "nam bo cham 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 do cham 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 do cham snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam do cham snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam do cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.