Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
y nang » ky nang, ly nang, v nang
qua ca » qua cac, qua cua, qua cai
loc va » hoc va, luc va
tuc va » thuc va, truc va, tuc xa
vi va » vi van, vai va, vu 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: su sach y nang xa hoi. hieu qua ca ((loc va) OR (tuc va)) hanh vi va triet~.
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. hieu qua ca ((loc va) or (tuc va)) hanh vi va triet*.