Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
tieu sach » chieu sach, dien sach, te sach
trinh cua » tinh cua, trinh luat, trinh quan
dong cong » duong cong, dung cong, dang cong
cua dong » chua dong, cua cong, cua dang
cong san » cong tac
toan cau » toan tap, toan tai
toan cao » toan tap
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 trinh cua dong cong san ((((toan cau) OR (toan cao))) OR (toan ban))~.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - hanh trinh cua dong cong san ((((toan cau) or (toan cao))) or (toan ban))*.