Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung nhat » truong nhat, trong nhat, trung nhan
mot chieu » doi chieu
nhat dang » nhan dang, nhat danh, nhat trang
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan cao » toan ban, toan tap

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: ((ho chieu) OR (mot chieu)) xanh - thanh trung nhat dang ((cong dan) OR (cong tan)) toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (mot chieu)) xanh - thanh trung nhat dang ((cong dan) OR (cong tan)) toan cao~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (mot chieu)) xanh - thanh trung nhat dang ((cong dan) OR (cong tan)) toan cao*.