Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
su sach » so sach, vu sach
ly hang » ly quang
ly nang » ky nang, ly vang, ly quang
qua cau » quan cau, qua cac, qua ca
luc va » duc va, loc va
tuc va » thuc va, truc va, tuc xa
x hoi » xa hoi, o hoi, x ho
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 ((ly nang) OR (ly hang)) x hoi. hieu qua cau ((luc va) OR (tuc va)) hanh vi va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ly nang) OR (ly hang)) x hoi. hieu qua cau ((luc va) or (tuc va)) hanh vi va triet~".
• Adding a wildcard symbol may retrieve word variants: su sach ((ly nang) OR (ly hang)) x hoi. hieu qua cau ((luc va) or (tuc va)) hanh vi va triet*.