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