Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
trung tuan » trung thanh, trung tam, tran tuan
doi chieu » doc hieu, doi chi, ho chieu
trung cua » truong cua, trung cap, dung cua
cong tac » cong ty
tac ran » tac can, tac van, tac quan
ran cau » van cau, ban cau, can cau

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 tinh - thanh ((trung cua) OR (trung tuan)) trong cong tac ran cau~.
• Adding a wildcard symbol may retrieve word variants: doi chieu tinh - thanh ((trung cua) or (trung tuan)) trong cong tac ran cau*.