Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
cua thong » cua thuong, cua khong, cua tong
cong tac » cong ty
phan cac » nhan cach, phan dau, phan lap
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - hanh trinh cua thong ((cong san) or (cong tac)) ((phan cac) or (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh trinh cua thong ((cong san) OR (cong tac)) ((phan cac) OR (than cap)).
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh trinh cua thong ((cong san) or (cong tac)) ((phan cac) or (than cap))*.