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