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