Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"trinh che phan slippers" » "trinh he phan slippers", "trinh cho phan slippers", "trinh chu phan slippers", "trinh che pham slippers", "trinh chi phan slippers", "trinh che phan slippery", "trinh che phan grippers"
"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 ("trinh che phan slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("trinh che phan slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( trinh che phan slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("trinh che phan slippers"))) or ("locating bug code snippets"))*.