Perhaps you should try some spelling variations:
"dung quan liu slippers" » "dung quang liu slippers", "dung luan liu slippers", "luong quan liu slippers", "dung quan li slippers", "dung juan liu slippers", "dung quan giua slippers", "dung quan liu slippery", "dung quan liu grippers"
"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 quan 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 quan liu slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung quan liu slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung quan liu slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.