Perhaps you should try some spelling variations:
"dung thue trong slippers" » "dung thuc trong slippers", "dung thuat trong slippers", "dung thuoc trong slippers", "dung thu trong slippers", "dung thiet trong slippers", "dung thue trong slippery", "dung thue trong 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 thue trong 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 thue trong slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung thue trong slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung thue trong slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.