Perhaps you should try some spelling variations:
"dung tang ma slippers" » "dung thang ma slippers", "dung dang ma slippers", "dung nang ma slippers", "dung mang may slippers", "dung tang van slippers", "dung tang ma slippery", "dung tang ma 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 tang ma 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 tang ma slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung tang ma slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung tang ma slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.