Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
cong trong » cong thuong, duong trong, cong trinh
manh hung » anh huong
trong dan » trong dang, trong san, trong tan
hung cua » huong cua, chung cua, khung cua
than cau » toan cau, than cap, thanh chau
phan cau » phan dau, phan tu, phan lap
phan cac » nhan cach, phan dau, phan lap

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 - manh hung cua cong trong dan ((than cau) OR (((phan cau) OR (phan cac))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - manh hung cua cong trong dan ((than cau) or (((phan cau) OR (phan cac))))~".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - manh hung cua cong trong dan ((than cau) or (((phan cau) OR (phan cac))))*.