Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toc do hoai snippets" » "toc do hoa snippets", "toc do hai snippets", "toc doi thoai snippets", "toc dao hoai snippets", "toc co hoai snippets", "hoc do hoai 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 do hoai 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 do hoai snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toc do hoai snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc do hoai snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.