Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toc tu hoa snippets" » "hoc tu hoa snippets", "toc ta hoa snippets", "tac tu hoa snippets", "toc tu khoa snippets", "toc tu hoai snippets", "toc tuy hoa 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 tu hoa 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 tu hoa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toc tu hoa snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc tu hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.