Perhaps you should try some spelling variations:
thien chanh » thien thanh, thien chinh, hien hanh
thanh trung » thanh tung
thien danh » thien anh, thien dang, thien thanh
tien thanh » tien thinh, tran thanh, den thanh
thong cong » trong cong, tong cong, thong thong
trung he » trung ha, trong he, trung hieu
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, 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 chanh))) or (tien thanh)) - thanh trung he thong cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((thien danh) OR (thien chanh))) OR (tien thanh)) - thanh trung he thong cong dan than cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((((thien danh) or (thien chanh))) or (tien thanh)) - thanh trung he thong cong dan than cao*.