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