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