Perhaps you should try some spelling variations:
van cham » van chat, van tham, va cham
hanh lai » hanh lam, hanh tai, thanh lap
hieu van » hieu va, thien van, lieu va
lai cua » dai cua, hai cua, lai chau
sach ky » sac ky, sach y, sach ty
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
co hoi » co hoc

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: te sach ky nang ((co hoi) OR (co loi)). hieu van cham ((xuc va) OR (tuc va)) hanh lai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ((co hoi) OR (co loi)). hieu van cham ((xuc va) or (tuc va)) hanh lai cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((co hoi) OR (co loi)). hieu van cham ((xuc va) or (tuc va)) hanh lai cua tre*.