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