Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, nghiep nganh
tang cuong » nang luong
cuong dung » tuong duong, ung dung, thong dung
hieu manh » chieu xanh, dieu hanh, hien hanh
dung cong » dung trong
anh tang » anh bang, anh dang, anh nang
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu manh) or (hieu nganh)) - anh tang cuong dung cong dan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (hieu nganh)) - anh tang cuong dung cong dan than cap.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (hieu nganh)) - anh tang cuong dung cong dan than cap*.