Perhaps you should try some spelling variations:
thanh trung » thanh tung
thien danh » thien anh, thien thanh, thien chanh
thien dang » thien bang, thien nang, thien cong
trung tran » trung tuan, trung thanh, trung tam
tran thong » toan thong, tran hong, tran trong
thong cong » trong cong, tong cong, thong thong
dien dan » hien dai, vien dai, gian dan
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
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 danh) or (thien dang))) or (dien dan)) - thanh trung tran thong cong tac than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((thien danh) OR (thien dang))) OR (dien dan)) - thanh trung tran thong cong tac than cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((((thien danh) or (thien dang))) or (dien dan)) - thanh trung tran thong cong tac than cau*.