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