Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thanh trung » thanh tung
hieu manh » chieu xanh, hieu nganh, dieu hanh
thien anh » thien danh, tien anh, thien chanh
trung dan » trung dai, tung dan, trung van
dung cong » dung trong
dan dung » van dung, tin dung, ap dung
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cau » 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 ((hieu manh) or (((thien anh) or (thien thanh)))) - thanh trung dan dung cong san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (((thien anh) OR (thien thanh)))) - thanh trung dan dung cong san toan cau*.