Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chen co toc snippets" » "cheo co toc snippets", "chuan co toc snippets", "chen cao toc snippets", "chen co hoc snippets", "chen 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: (((("chen 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: (((("chen co toc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chen co toc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chen co toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.