Perhaps you should try some spelling variations:
"dung sang lap slippers" » "dung san lap slippers", "dung dang lap slippers", "dung nang lap slippers", "dung sang tao slippers", "dung sang ma slippers", "dung sang tai slippers", "dung sang lap slippery", "dung sang lap 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 sang lap 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 sang lap slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung sang lap slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung sang lap slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.