Perhaps you should try some spelling variations:
thanh trung » thanh tung
thien anh » thien danh, tien anh, thien thanh
hien anh » hien hanh, dien anh, tien anh
trung va » truong va, trang va, trung ha
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan ban, toan tap
va dung » van dung, va duong, vat dung

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien anh) or (thien anh)) - thanh trung va dung ((cong dan) or (cong tan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien anh) OR (thien anh)) - thanh trung va dung ((cong dan) OR (cong tan)) toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien anh) or (thien anh)) - thanh trung va dung ((cong dan) or (cong tan)) toan cau*.