Perhaps you should try some spelling variations:
tieng thanh » tien thanh, tieng anh, tieng han
thanh trung » thanh tung
hoc tieng » hoc hien
trung cua » truong cua, trung tuan, trung cap
cua dong » chua dong, cua cong, cua dang
cong ban » cong bang, cong dan, dong ban
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc tieng thanh - thanh trung cua dong ((cong ban) or (((cong tan) or (cong san)))) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc tieng thanh - thanh trung cua dong ((cong ban) OR (((cong tan) OR (cong san)))) than cau.
• Adding a wildcard symbol may retrieve word variants: hoc tieng thanh - thanh trung cua dong ((cong ban) or (((cong tan) or (cong san)))) than cau*.