Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
sach ky » sac ky, sach y, sach ty
xuc van » duc van, luc van, xuc ban
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
lai hoi » dai hoi, lai hoa, lai roi
mai hoi » mai khoi, dai hoi, mai doi
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac
vi cua » vai cua, di cua

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: te sach ky nang ((ma hoa) OR (((mai hoi) OR (lai hoi)))). hieu ve cac xuc van hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ((ma hoa) or (((mai hoi) OR (lai hoi)))). hieu ve cac xuc van hanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((ma hoa) or (((mai hoi) OR (lai hoi)))). hieu ve cac xuc van hanh vi cua tre*.