Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
hieu van » hieu va, thien van, lieu va
ca viet » va viet, co viet, hoa viet
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
lam xuc » cam xuc, lam duoc
ky lang » ky dang, ky tang, tay lang
van lam » van nam
van hoc » van hoa
xuc va » duc va, tuc va, luc va
tu van » tu va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu van ((ky lang) or (ky nang)) van hoc. hieu van lam xuc va hanh di ((va triet) or (ca viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu van ((ky lang) OR (ky nang)) van hoc. hieu van lam xuc va hanh di ((va triet) OR (ca viet)).
• Adding a wildcard symbol may retrieve word variants: tu van ((ky lang) or (ky nang)) van hoc. hieu van lam xuc va hanh di ((va triet) or (ca viet))*.