Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
nham thuc » nhan thuc, nam thuc, nham thu
hieu van » hieu va, thien van, lieu va
thanh do » thanh de, thanh pho, thanh hoa
toc sach » hoc sach, doc sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
van nham » van nam, van nhan, van tham
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
do cua » doi cua, co cua, de 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: ((((te sach) or (toc sach))) or (thuat sach)) y nang x hoi. hieu van nham thuc va thanh do cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((te sach) OR (toc sach))) OR (thuat sach)) y nang x hoi. hieu van nham thuc va thanh do cua tre.
• Adding a wildcard symbol may retrieve word variants: ((((te sach) or (toc sach))) or (thuat sach)) y nang x hoi. hieu van nham thuc va thanh do cua tre*.