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

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 ((danh van) OR (doanh van)) hoi. hieu van cau xuc va hanh di ((su triet) OR (cua viet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky ((danh van) OR (doanh van)) hoi. hieu van cau xuc va hanh di ((su triet) or (cua viet))~".
• Adding a wildcard symbol may retrieve word variants: so sach ky ((danh van) OR (doanh van)) hoi. hieu van cau xuc va hanh di ((su triet) or (cua viet))*.