Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
ho chieu » theo chieu, hoc thieu, doi chieu
dung cua » dung cho
van cong » van dong, van phong, phan cong
cong tan » cong tac, cong san, cong thanh
than cau » toan cau, phan cau, thanh chau
than cap » khan cap, thanh lap, thanh cac
luan » quan, lan

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: ho chieu sach - thanh ((dung cua) OR (dung luan)) van cong tan ((than cau) OR (than cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh ((dung cua) OR (dung luan)) van cong tan ((than cau) or (than cap))~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((dung cua) OR (dung luan)) van cong tan ((than cau) or (than cap))*.