Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
doi chieu » doc hieu, doi chi, ho chieu
dap nhung » va nhung, dap ung, cam nhung
vap nhung » va nhung, ve nhung, voi nhung
thanh cau » thanh chau, nhanh cau, thanh ca
thanh mau » hanh mau, thanh san, thanh hai
cong san » cong tac

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh tung ((dap nhung) OR (vap nhung)) cong san ((thanh cau) OR (thanh mau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh tung ((dap nhung) or (vap nhung)) cong san ((thanh cau) OR (thanh mau))~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh tung ((dap nhung) or (vap nhung)) cong san ((thanh cau) OR (thanh mau))*.