Perhaps you should try some spelling variations:
"dung sieu cao snippets" » "dung hieu cao snippets", "dung tieu cao snippets", "nhung sieu cao snippets", "dung lieu cao snippets", "dung chieu cao snippets", "dung sieu am snippets"
"dung java java snippets" » "dung va java 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: (((("dung sieu cao snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung sieu cao snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung sieu cao snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung sieu cao snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.