Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vat sieu toc snippets" » "vat lieu toc snippets", "vat bien toc snippets", "dat hieu toc snippets", "vat sieu thi snippets", "vat sieu tri snippets", "vat hieu tuc 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: (((("vat sieu 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: (((("vat sieu toc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vat sieu toc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vat sieu toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.