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