Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
toc sach » hoc sach, doc sach, thuoc sach
thanh vi » hanh vi, thanh va, thanh ve
van cam » van nam, van cau, van dam
van lam » van nam
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach y nang x hoi. hieu ((van cam) or (van lam)) xuc ban thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y nang x hoi. hieu ((van cam) OR (van lam)) xuc ban thanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach y nang x hoi. hieu ((van cam) or (van lam)) xuc ban thanh vi cua tre*.