Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thanh trung » thanh tung
trung tuan » trung thanh, trung tam, tran tuan
tuan thong » toan thong, tran thong, tuan phong
thien anh » thien danh, tien anh, thien chanh
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
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 ((thien anh) or (thien thanh)) - thanh trung tuan thong ((cong dan) or (cong tan)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien anh) OR (thien thanh)) - thanh trung tuan thong ((cong dan) OR (cong tan)) than cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien anh) or (thien thanh)) - thanh trung tuan thong ((cong dan) or (cong tan)) than cau*.