Perhaps you should try some spelling variations:
"dung luat data slippers" » "dung luan data slippers", "dung quat data slippers", "dung cua data slippers", "dung luat dat slippers", "dung luat dan slippers", "dung luat dau slippers", "dung luat data slippery", "dung luat data 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 luat data 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 luat data slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung luat data slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung luat data slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.