Perhaps you should try some spelling variations:
"dung using java snippets" » "dung ung java snippets", "dung sinh java snippets", "dung uong java snippets", "dung using data snippets"
"cong cua core snippets" » "cong cu core snippets", "dong cua core snippets", "huong cua core snippets", "cong cua cong snippets", "cong cua co snippets", "cong cua che snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung using java snippets") OR ("cong cua core snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( dung using java snippets ) or ( cong cua core snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung using java snippets") or ("cong cua core snippets"))) or ("locating bug code snippets"))*.