Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh lai » hanh lam, hanh tai, thanh lap
cau thuc » cau truc, cuu thuc, can thuc
lai cua » dai cua, hai cua, lai chau
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
van cau » van dau, van hau, van chat
su sach » vu sach
bo sach » co sach, hoc sach
so sach » so sanh, co sach, hoc sach
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
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) OR (so sach))) OR (bo sach)) y nang x hoi. hieu van cau thuc va hanh lai cua tre~.
• Adding a wildcard symbol may retrieve word variants: ((((su sach) or (so sach))) or (bo sach)) y nang x hoi. hieu van cau thuc va hanh lai cua tre*.