Perhaps you should try some spelling variations:
cac quoc » cac nuoc, cac cuoc, cao quoc
ban banh » ban hanh, ban danh, ban thanh
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
ban anh » ban hanh, ban danh, bang anh
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
ve cua » le cua, de cua, te cua
x hoi » xa hoi, x ho, 5 hoi
o hoi » co hoi, o hoc, o hai

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 y nang ((x hoi) OR (o hoi)). hieu va cac quoc ((ban anh) OR (ban banh)) ve cua tre~.
• Adding a wildcard symbol may retrieve word variants: su sach y nang ((x hoi) or (o hoi)). hieu va cac quoc ((ban anh) or (ban banh)) ve cua tre*.