Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
va cham » va chat, va tham
xuc van » duc van, luc van, vuc van
cua tre » cua te, cuu tre, cua triet
va cam » va cac, va cao, va cai
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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: "su sach ky nang x hoi. hieu ((va cam) OR (va cham)) xuc van hanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x hoi. hieu ((va cam) OR (va cham)) xuc van hanh vi cua tre*.