Perhaps you should try some spelling variations:
su sach » so sach, vu sach
van cac » van hac, van cau, dan cac
van bac » van ban, van bao, van hac
va hanh » van hanh, va thanh, va danh
cu tren » tu tren, dua tren
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
tuc va » thuc va, truc va, tuc xa
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) OR (van bac)) tuc va hanh vi ((cu tren) OR (cua te))~.
• Adding a wildcard symbol may retrieve word variants: su sach v nang x hoi. hieu ((van cac) or (van bac)) tuc va hanh vi ((cu tren) or (cua te))*.