Perhaps you should try some spelling variations:
"cong dung dat slippers" » "cuong dung dat slippers", "cong dong dat slippers", "cong luong dat slippers", "cong dung va slippers", "cong dung tai slippers", "cong dung dat slippery", "cong dung dat 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: (((("cong dung dat slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong dung dat slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong dung dat slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong dung dat slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.