Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan he can snippets" » "nhan ha can snippets", "nhan ve can snippets", "nhan nghe can snippets", "nhan he dan snippets", "nhan he van snippets", "nhan he 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 he can 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 he can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan he can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan he can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.