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