Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
hanh tran » hanh trang, thanh tran, hanh tram
tran tuan » tran xuan, tran quang, tran thanh
tuan tong » toan tong, thuan trong, toan thong
tong cong » trong cong, cong cong, dung cong
cong tan » cong tac, cong san, cong thanh
ran cau » van cau, can cau, tran chau
ban cau » bang cau, ban can, van cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - hanh tran tuan tong cong tan ((ran cau) OR (ban cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hanh tran tuan tong cong tan ((ran cau) OR (ban cau))".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh tran tuan tong cong tan ((ran cau) OR (ban cau))*.