Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
hieu van » hieu va, thien van, lieu va
ban benh » san benh, ba benh, ban banh
benh cay » benh nay, benh ly, benh dai
tu sach » su sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
van lam » van nam
lam xuc » cam xuc, lam duoc
xuc ban » duc ban, cuc ban, quoc ban
cay cua » ca cua, day cua, cay ca
cua tre » cua te, cuu tre, cua triet

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: ((thu sach) OR (tu sach)) ky nang xa hoi. hieu van lam xuc ban benh cay cua tre~.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (tu sach)) ky nang xa hoi. hieu van lam xuc ban benh cay cua tre*.