Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
vu cham » va cham, vu kham, tu cham
vai cua » dai cua, hai cua, lai cua
duc van » duc va, duc tan, duc manh
ve cham » va cham, ve chat, ve chim
va nang » van nang, da nang, cam nang
cua tre » cua te, cuu tre, cua triet
v nang » vu nang, van nang, voi nang

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: toc sach ((v nang) OR (va nang)) xa hoi. hieu ((ve cham) OR (vu cham)) duc van hanh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((v nang) or (va nang)) xa hoi. hieu ((ve cham) OR (vu cham)) duc van hanh vai cua tre~".
• Adding a wildcard symbol may retrieve word variants: toc sach ((v nang) or (va nang)) xa hoi. hieu ((ve cham) OR (vu cham)) duc van hanh vai cua tre*.