Perhaps you should try some spelling variations:
"nang nguoi code snippets" » "tang nguoi code snippets", "nhung nguoi code snippets", "thang nguoi code snippets", "nang nguoi co snippets", "nang nguoi cong snippets", "nang nguoi cor snippets", "nang nguoi code slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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: (((("nang nguoi code snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nang nguoi code snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang nguoi code snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang nguoi code snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.