Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trung tuan » trung thanh, trung tam, tran tuan
trung cua » truong cua, trung cap, thong cua
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
dung cua » dung luan, dung cho
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: ho chieu sach - thanh ((((trung cua) or (dung cua))) or (trung tuan)) dung cong tac than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((((trung cua) OR (dung cua))) OR (trung tuan)) dung cong tac than cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((((trung cua) or (dung cua))) or (trung tuan)) dung cong tac than cau*.