Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung cua viet slippers" » "dung luan viet slippers", "dung cho viet slippers", "dung ca viet slippers", "dung hoa viet slippers", "dung cua dieu slippers", "dung cua viet slippery", "dung cua viet 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 cua viet 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 cua viet slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cua viet slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cua viet slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.