Perhaps you should try some spelling variations:
thanh trung » thanh tung
thien danh » thien dang, thien thanh, thien chanh
thien anh » tien anh, thien thanh, thien chanh
tam trong » nam trong, lam trong, pham trong
cong san » cong tac
than cau » toan cau, phan cau, than cap
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 anh) or (thien danh)) - thanh trung tam trong cong san ((than cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien anh) OR (thien danh)) - thanh trung tam trong cong san ((than cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: hoc ((thien anh) or (thien danh)) - thanh trung tam trong cong san ((than cau) or (toan cao))*.