Perhaps you should try some spelling variations:
thanh trung » thanh tung
doi chieu » doi chi, ho chieu, mot chieu
trung cuu » trung cua, trung cau, truong cua
doc hieu » toc thieu, hoc thieu, hoc hien
cuu nang » chuc nang, cam nang, cuu van
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
than cau » toan cau, phan cau, than cap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doc hieu)) xanh - thanh trung cuu nang ((cong dan) OR (cong tan)) than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) or (doc hieu)) xanh - thanh trung cuu nang ((cong dan) OR (cong tan)) than cau~".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (doc hieu)) xanh - thanh trung cuu nang ((cong dan) OR (cong tan)) than cau*.