Perhaps you should try some spelling variations:
"dung cong ngoc slippers" » "dung trong ngoc slippers", "dung cong ngo slippers", "dung hoang ngoc slippers", "dung cuong ngon slippers", "dung cong ngoc slippery", "dung cong ngoc 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 cong ngoc 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 cong ngoc slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cong ngoc slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cong ngoc slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.