Perhaps you should try some spelling variations:
"dung phung duc slippers" » "dung phuong duc slippers", "dung chung duc slippers", "dung nhung duc slippers", "dung phung quoc slippers", "dung phan duc slippers", "dung hong duc slippers", "dung phung duc slippery", "dung phung duc 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 phung duc 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 phung duc slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung phung duc slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung phung duc slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.