Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
hieu van » hieu va, thien van, lieu va
hanh vai » hanh vi, hanh va, hanh tai
dan hanh » dang hanh, dan khanh, dan thanh
toc sach » hoc sach, doc sach, thuoc sach
thuc dan » thuc hanh, hoc dan, thuc vat
van nham » van nam, van nhan, van tham
vai cua » dai cua, hai cua, lai cua
so sach » so sanh, co sach, hoc sach
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
bo sach » co sach, hoc sach
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: ((((so sach) OR (bo sach))) OR (toc sach)) ky sang ma hoa. hieu van nham thuc dan hanh vai cua tre~.
• Adding a wildcard symbol may retrieve word variants: ((((so sach) or (bo sach))) or (toc sach)) ky sang ma hoa. hieu van nham thuc dan hanh vai cua tre*.