Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van tu toc snippets" » "van thu toc snippets", "van du toc snippets", "ban tu toc snippets", "van tu hoc snippets", "van tu goc snippets", "van tu tot 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: (((("van tu 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: (((("van tu toc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van tu toc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van tu toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.