Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vat cao toc snippets" » "va cao toc snippets", "vat co toc snippets", "vat cach toc snippets", "vat cac toc snippets", "vat cao hoc snippets", "vat cao ngoc 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 cao 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 cao toc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vat cao toc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vat cao toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.