Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"cong trac code snippets" » "cong tac code snippets", "cong thuc code snippets", "cong tan code snippets", "cong trac code slippers", "cong trac core snippets"
"locating bug code snippets" » "locating bug code slippers", "locating bug core snippets", "locating bung code snippets", "locating bugs code snippets"

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 trac code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("cong trac code snippets"))) OR ("locating bug code snippets"))*.
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( cong trac code snippets ))) or ( locating bug code snippets ))*.