Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
theo chieu » theo tieu, theo chu, thi chieu
trung cua » truong cua, trung tuan, trung cap
truong ca » truong cao, truong va, trong ca
ho chieu » hoc thieu, doi chieu, mot chieu
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan
phan cau » phan dau, phan cac, phan tu

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: ((theo chieu) OR (ho chieu)) xanh - thanh ((trung cua) OR (truong ca)) thuong cong tan phan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (ho chieu)) xanh - thanh ((trung cua) or (truong ca)) thuong cong tan phan cau~".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (ho chieu)) xanh - thanh ((trung cua) or (truong ca)) thuong cong tan phan cau*.