Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung jin liu slippers" » "dung tin liu slippers", "dung ninh liu slippers", "dung vinh liu slippers", "dung jin li slippers", "dung xin liu slippers", "dung jin liu slippery", "dung jin liu grippers"
"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 jin liu slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung jin liu slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung jin liu slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung jin liu slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.