Perhaps you should try some spelling variations:
thanh tung » thanh cong
doi chieu » doc hieu, doi chi, mot chieu
ho chieu » theo chieu, hoc thieu, mot chieu
va trong » va truong, va thong, va tuong
cong ban » cong bang, cong san, cong tan
khan cap » khan ap, khoan cam, phan cac
than cap » thanh lap, thanh cac, than cua
tung va » trung va, tuong va, dung va

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 (doi chieu)) xanh - thanh tung va trong cong ban ((khan cap) OR (than cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) xanh - thanh tung va trong cong ban ((khan cap) or (than cap))~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (doi chieu)) xanh - thanh tung va trong cong ban ((khan cap) or (than cap))*.