Perhaps you should try some spelling variations:
"dung doanh ma slippers" » "dung dan ma slippers", "dung dong ma slippers", "dung doanh va slippers", "dung doanh ha slippers", "dung doanh tai slippers", "dung doanh ma slippery", "dung doanh 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 doanh 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 doanh ma slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung doanh ma slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung doanh ma slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.