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