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