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