Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung dong » nhung don, nhung cong, nhung dung
dong doanh » dung doanh, trong doanh, doanh doanh
hoc chieu » hoc thieu, ho chieu, hoc hien
trang cua » tranh cua, tang cua, thang cua
trung cua » truong cua, trung tuan, trung cap
va ban » va bai, va bao

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: hoc chieu sach - hanh ((trang cua) OR (trung cua)) nhung dong doanh ((va ban) OR (van ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - hanh ((trang cua) or (trung cua)) nhung dong doanh ((va ban) OR (van ban))~".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh ((trang cua) or (trung cua)) nhung dong doanh ((va ban) OR (van ban))*.