Perhaps you should try some spelling variations:
"khuan doi nhap snippets" » "khuan noi nhap snippets", "quan doi nhap snippets", "khoa doi nhap snippets", "khuan hoi nhap snippets", "khuan doi nhan snippets", "khuan moi nhat snippets", "khuan doi nhap 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", "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: (((("khuan doi nhap snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khuan doi nhap snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khuan doi nhap snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khuan doi nhap snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.