Perhaps you should try some spelling variations:
"dung cung va slippers" » "dung chung va slippers", "dung cong va slippers", "dung ung va slippers", "dung dung va slippers", "dung vung va slippers", "dung cung va slippery", "dung cung va 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 cung va 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 cung va slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cung va slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cung va slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.