Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cau treo » cau theo, cau tren, cau triet
su sach » so sach, vu sach
van cac » van hac, van cau, van bac
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
tuc va » thuc va, truc va, duc va
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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 v nang x hoi. hieu van cac ((tuc va) OR (tuc xa)) hanh vi ((cau treo) OR (cua te))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach v nang x hoi. hieu van cac ((tuc va) OR (tuc xa)) hanh vi ((cau treo) or (cua te))~".
• Adding a wildcard symbol may retrieve word variants: su sach v nang x hoi. hieu van cac ((tuc va) OR (tuc xa)) hanh vi ((cau treo) or (cua te))*.