Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh
dong cong » duong cong, dung cong, dang cong
ho chieu » theo chieu, hoc thieu, doi chieu
cua dong » chua dong, cua cong, cua dang
cong tan » cong tac, cong san, cong thanh
than cau » toan cau, phan cau, thanh chau
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: ho chieu sach - ((hanh trinh) OR (hanh chinh)) cua dong cong tan ((than cau) or (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((hanh trinh) OR (hanh chinh)) cua dong cong tan ((than cau) OR (than cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - ((hanh trinh) OR (hanh chinh)) cua dong cong tan ((than cau) or (than cap))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((hanh trinh) OR (hanh chinh)) cua dong cong tan ((than cau) or (than cap))*.