Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"cong ban dat slippers" » "cong bang dat slippers", "cong san dat slippers", "cong tan dat slippers", "cong ban dan slippers", "cong dan dat slippers", "cong ban dau slippers", "cong ban dat slippery", "cong ban 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 ("cong ban 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 ("cong ban dat slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( cong ban dat slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("cong ban dat slippers"))) or ("locating bug code snippets"))*.