Perhaps you should try some spelling variations:
"dun xiang zhang slippers" » "dun ming zhang slippers", "dun qing zhang slippers", "dun yang zhang slippers", "dun nang zhang slippers", "wen xiang zhang slippers", "dun xiang zhang slippery", "dun xiang 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 java java snippets") or ("dun xiang zhang slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("dun xiang zhang slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dun xiang zhang slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dun xiang zhang slippers"))) or ("locating bug code snippets"))*.