Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu manh » chieu xanh, hieu nganh, hien hanh
trung cap » truong cao, trung tam
hang dong » hang nong, hang cong, hanh dong
dong nang » dong bang, dung nang, dong yang
cap hang » cap hoang, cap bang, cap han
phan cau » phan dau, phan cac, phan lap

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: hoc ((hieu manh) OR (dieu hanh)) - thanh trung cap hang dong nang ((phan cau) OR (phan tu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) or (dieu hanh)) - thanh trung cap hang dong nang ((phan cau) OR (phan tu))~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (dieu hanh)) - thanh trung cap hang dong nang ((phan cau) OR (phan tu))*.