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 tan » cong tac, cong san, cong thanh
tran tap » toan tap, tran tuan, trang tai
tran tan » tran tuan, tran van, tran thanh

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 sach - thanh ((trung cua) OR (trung tuan)) dung cong tan ((tran tap) OR (tran tan))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - thanh ((trung cua) OR (trung tuan)) dung cong tan ((tran tap) or (tran tan))~".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh ((trung cua) OR (trung tuan)) dung cong tan ((tran tap) or (tran tan))*.