Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung phan nan slippers" » "dung nhan nan slippers", "dung luan nan slippers", "dung ha nan slippers", "dung phan nang slippers", "dung phan van slippers", "dung phan lan slippers", "dung phan nan slippery", "dung phan nan 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 ("dung phan nan slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("dung phan nan slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dung phan nan slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dung phan nan slippers"))) or ("locating bug code snippets"))*.