Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
hieu van » hieu va, thien van, lieu va
so sach » so sanh, bo sach, co sach
van cam » van nam, van lam, van cau
xuc van » duc van, luc van, vuc van
cua tre » cua te, cuu tre, cua triet
so viet » hoc viet
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, 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: so sach y nang ((x hoi) or (x ho)). hieu van cam xuc van thanh san ((cua tre) or (so viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang ((x hoi) OR (x ho)). hieu van cam xuc van thanh san ((cua tre) OR (so viet)).
• Adding a wildcard symbol may retrieve word variants: so sach y nang ((x hoi) or (x ho)). hieu van cam xuc van thanh san ((cua tre) or (so viet))*.