Perhaps you should try some spelling variations:
sach tri » sach tai, sach tren, sach truc
tri nang » thi nang, tra nang, tri bang
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
van cam » van nam, van cau, van dam
van lam » van nam
cuc ban » cua ban, cac ban, cuu ban
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di cua

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tri nang ma hoi. hieu ((van cam) OR (van lam)) cuc ban hanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu sach tri nang ma hoi. hieu ((van cam) OR (van lam)) cuc ban hanh vi cua tre*.