Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dan coc dat slippers" » "dan toc dat slippers", "dan hoc dat slippers", "dan cac dat slippers", "dan chon dat slippers", "dan duoc dat slippers", "dan coc dat slippery", "dan coc dat 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 ("dan coc dat slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("dan coc dat slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dan coc dat slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dan coc dat slippers"))) or ("locating bug code snippets"))*.