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