Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kieu thi toc snippets" » "kieu thu toc snippets", "sieu thi toc snippets", "lieu thi toc snippets", "kieu thi tac snippets", "kieu thi voc snippets", "kieu thi goc 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: (((("kieu thi 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: (((("kieu thi toc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kieu thi toc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kieu thi toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.