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
dong ban » dong bang, dong san, dong bac
than cap » thanh lap, thanh cac, than cua
khan cap » khan ap, khoan cam, phan cac

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)) dong ban ((than cap) OR (khan cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh tung ((dap nhung) or (vap nhung)) dong ban ((than cap) OR (khan cap))~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh tung ((dap nhung) or (vap nhung)) dong ban ((than cap) OR (khan cap))*.