Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
ky doanh » ly doanh, ky danh, ty doanh
hieu van » hieu va, thien van, lieu va
su triet » su viet, su tien, ve triet
cua viet » ca viet, hoa viet, cua vat
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
van cau » van dau, van hau, van chat
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di

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: so sach ky doanh van hoa. hieu van cau truc va hanh di ((su triet) OR (cua viet))~.
• Adding a wildcard symbol may retrieve word variants: so sach ky doanh van hoa. hieu van cau truc va hanh di ((su triet) or (cua viet))*.