Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
xuc van » duc van, vuc van, xuc ban
luc van » luoc van, luu van, duc van
anh tai » hanh tai, anh thai, vanh tai
tai cuu » tai cuc, tai buu, tai cua
cuu tre » cua tre, cau tren, cau treo
y nang » ly nang, v nang, may nang

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: thuoc sach ((y nang) OR (ky nang)) xa hoi. hieu vu cham ((xuc van) OR (luc van)) anh tai cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ((y nang) or (ky nang)) xa hoi. hieu vu cham ((xuc van) OR (luc van)) anh tai cuu tre~".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ((y nang) or (ky nang)) xa hoi. hieu vu cham ((xuc van) OR (luc van)) anh tai cuu tre*.