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