Perhaps you should try some spelling variations:
tang luan » dung luan
anh tang » anh bang, anh dang, anh nang
luan ung » luan hung, luon ung, luan chung
cong dan » cong san, cong tan, huong dan
cong tac » cong ty
toan cao » toan ban, toan tap
cho chu » cho thue
chu han » chu van

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

• Performing a fuzzy search may retrieve terms with similar spellings: cho chu han - anh tang luan ung ((cong dan) or (cong tac)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cho chu han - anh tang luan ung ((cong dan) OR (cong tac)) toan cao.
• Adding a wildcard symbol may retrieve word variants: cho chu han - anh tang luan ung ((cong dan) or (cong tac)) toan cao*.