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