Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
bien tinh » bi tinh, yen tinh, ban tinh
hanh hinh » hanh chinh, hanh tinh, hanh dinh
tong cong » trong cong, cong cong, dung cong
hinh cua » chinh cua, sinh cua, tinh cua
cua tong » cua cong, cua dong, cua nong
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap

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) OR (((diep tinh) OR (bien tinh)))) - hanh hinh cua tong cong tac toan cau~.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (((diep tinh) or (bien tinh)))) - hanh hinh cua tong cong tac toan cau*.