Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"cong danh ve snippets" » "cuong danh ve snippets", "cong dan ve snippets", "cong thanh ve snippets", "cong dinh ve snippets", "cong hanh ve snippets", "cong anh ve snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 java java snippets") OR ("cong danh ve snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( cong danh ve snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("cong danh ve snippets"))) or ("locating bug code snippets"))*.