Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
thanh di » thanh doi, thanh de, thanh do
van cam » van nam, van cau, van dam
van lam » van nam
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, luc va
di cua » dai cua, doi cua, de cua
x hoi » o hoi, x ho, 5 hoi

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) or (xa hoi)). hieu ((van cam) or (van lam)) xuc va thanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y nang ((x hoi) OR (xa hoi)). hieu ((van cam) OR (van lam)) xuc va thanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach y nang ((x hoi) or (xa hoi)). hieu ((van cam) or (van lam)) xuc va thanh di cua tre*.