Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu manh » chieu xanh, hieu nganh, dieu hanh
trung cua » truong cua, trung tuan, trung cap
hoc hieu » hoc thieu, hoc hien, doc hieu
cua tong » cua cong, cua dong, cua nong
cong dan » cong san, cong tan, cong dong
cong tac » cong ty
than cau » toan cau, phan cau, than cap

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 - thanh trung cua tong ((((cong dan) OR (huong dan))) OR (cong tac)) than cau~.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - thanh trung cua tong ((((cong dan) or (huong dan))) or (cong tac)) than cau*.