Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
trung tuan » trung thanh, trung tam, tran tuan
trung cua » truong cua, trung cap, dung cua
dung cong » dung trong
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - thanh ((trung cua) or (trung tuan)) dung cong tac than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh ((trung cua) OR (trung tuan)) dung cong tac than cau.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh ((trung cua) or (trung tuan)) dung cong tac than cau*.