Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
va triet » va trien, ve triet, cua triet
vu sach » vu bach, su sach, vu khach
ky lang » ky dang, ky tang, tay lang
van hoe » van hoa, van hoc, van hieu
nam xuc » cam xuc, nam xua, nam thuc
xuc van » duc van, luc van, vuc van
hanh di » hanh vi, hanh de, hang di
thiet » thieu

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: vu sach ((ky lang) OR (ky nang)) van hoe. hieu van nam xuc van hanh di ((va triet) OR (va thiet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ((ky lang) or (ky nang)) van hoe. hieu van nam xuc van hanh di ((va triet) OR (va thiet))~".
• Adding a wildcard symbol may retrieve word variants: vu sach ((ky lang) or (ky nang)) van hoe. hieu van nam xuc van hanh di ((va triet) OR (va thiet))*.