Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tieu sach » chieu sach, dien sach, te sach
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
cua nhung » va nhung
tinh cua » trinh cua, sinh cua, tinh chat
cong tac » cong ty
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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 tieu sach - hanh tinh cua nhung cong tac ((toan cau) OR (toan ban))~.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - hanh tinh cua nhung cong tac ((toan cau) or (toan ban))*.