Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
hoc chieu » hoc thieu, ho chieu, hoc hien
ca thuong » cao thuong, cua thuong, va thuong
trinh ca » trinh cau, trinh cua, trinh cac
cong tac » cong ty
khan cap » khan ap, than cap, khoan cam
toan tap » toan ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sach - hanh trinh ca thuong ((cong san) or (cong tac)) ((khan cap) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh trinh ca thuong ((cong san) OR (cong tac)) ((khan cap) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh trinh ca thuong ((cong san) or (cong tac)) ((khan cap) or (toan tap))*.