Perhaps you should try some spelling variations:
chung cong » nhung cong, chong cong, phung cong
tang luat » tang luan, nang suat, hang luan
kham kha » kham khoa, kham pha, pham khoa
kha nang » phap nang, ky nang, ki nang
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: kham kha nang - anh ((tang luat) or (dung luan)) chung cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: kham kha nang - anh ((tang luat) OR (dung luan)) chung cong dan toan ban*.