Perhaps you should try some spelling variations:
"dung hui zhang slippers" » "dung huu khang slippers", "dung wei zhang slippers", "dung hao zhang slippers", "dung hai zhang slippers", "dong hui zhang slippers", "dung hoai zhang slippers", "dung hui zhang slippery", "dung hui zhang 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 hui zhang 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 hui zhang slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung hui zhang slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung hui zhang slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.