Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien hanh » dieu hanh
thien anh » thien danh, tien anh, thien thanh
trung van » truong van, trong van, trung va
hang cong » dang cong, hang nong, bang cong
van hang » van khang, van hoang, van thang
cong dan » cong san, cong tan, huong dan
than cau » toan cau, than cap, thanh chau
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien hanh) or (thien anh)) - thanh trung van hang cong dan ((than cau) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien hanh) OR (thien anh)) - thanh trung van hang cong dan ((than cau) OR (phan cau)).
• Adding a wildcard symbol may retrieve word variants: hoc ((hien hanh) or (thien anh)) - thanh trung van hang cong dan ((than cau) or (phan cau))*.