Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"tran hai dan slippers" » "tran bai dan slippers", "tran chau dan slippers", "tran nhat dan slippers", "tran hai dang slippers", "tran hoi dan slippers", "tran hai tan slippers", "tran hai dan slippery", "tran hai dan 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 ("tran hai dan slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("tran hai dan slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( tran hai dan slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("tran hai dan slippers"))) or ("locating bug code snippets"))*.