Perhaps you should try some spelling variations:
dung cong » dung trong
hanh luat » nganh luat, hang luan, hanh lam
can tang » cao tang, can bang, ca tang
han luan » hang luan, nhan luan, dan luan
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau
cap can » cap han, cap van, tap can

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

• Performing a fuzzy search may retrieve terms with similar spellings: cap can tang - ((han luan) or (hanh luat)) tin dung cong dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cap can tang - ((han luan) OR (hanh luat)) tin dung cong dan chan cau*.