Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quan thi toc snippets" » "quang thi toc snippets", "quan tri toc snippets", "quan tai toc snippets", "quan thi tac snippets", "quan thi voc snippets", "quan thi goc 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: (((("quan thi 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: (((("quan thi toc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quan thi toc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quan thi toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.