Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
duong cong » dung cong, luong cong, duong trong
trinh qua » trinh quan, trinh cua, trinh quang
qua duong » quan duong, qua dung, qua dong
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong thanh
than cau » toan cau, thanh chau, thanh mau
than cap » khan cap, thanh lap, thanh cac
phan cau » phan dau, phan cac, phan tu

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

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