Perhaps you should try some spelling variations:
"dung quan hap slippers" » "dung quang hap slippers", "dung luan hap slippers", "luong quan hap slippers", "dung quan phap slippers", "dung quan ha slippers", "dung quan hai slippers", "dung quan hap slippery", "dung quan hap 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 quan hap 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 quan hap slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung quan hap slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung quan hap slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.