Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thanh trung » thanh tung
thien danh » thien anh, thien dang, thien chanh
trung tuan » trung thanh, trung tam, tran tuan
cong thanh » dong thanh, cong trinh, cong tan
thanh toan » thanh hoa, thanh san, tinh toan
tuan dung » tuan duong, tran dung, tan dung
dung cong » dung trong
toan cao » toan ban, toan tap

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 thanh)) - thanh trung tuan dung cong thanh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien danh) OR (thien thanh)) - thanh trung tuan dung cong thanh toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien danh) or (thien thanh)) - thanh trung tuan dung cong thanh toan cao*.