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