Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, hoc sach, cuoc cach
cua triet » cua viet, va triet
cac khoi » cac thoi, cac khoan, cach thoi
su triet » su viet, su tien, ve triet
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cao
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: nuoc sach y nang ((xa hoi) OR (cac khoi)). hieu va cam xuc va hanh vi ((cua triet) OR (su triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nuoc sach y nang ((xa hoi) or (cac khoi)). hieu va cam xuc va hanh vi ((cua triet) OR (su triet))~".
• Adding a wildcard symbol may retrieve word variants: nuoc sach y nang ((xa hoi) or (cac khoi)). hieu va cam xuc va hanh vi ((cua triet) OR (su triet))*.