Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi co toc snippets" » "hoi co toc snippets", "khi co toc snippets", "khoa co toc snippets", "khoi cao toc snippets", "khoi co hoc snippets", "khoi co doc 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: (((("khoi co toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoi co toc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi co toc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi co toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.