Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van tham » van thanh, van tuan, van chat
tham xuc » tham nuoc, tham thuc, pham duc
cau tren » cu tren, dau tren, ca tren
tu sach » thu sach, su sach, te sach
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
xuc va » duc va, tuc va, luc va
vi cau » va cau, ve cau, di cau
x hoi » xa hoi, o hoi, x ho

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: tu sach ((y nang) OR (v nang)) x hoi. hieu van tham xuc va hanh vi cau tren~.
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) or (v nang)) x hoi. hieu van tham xuc va hanh vi cau tren*.