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