Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
te sach » toc sach
sach ky » sac ky, sach y, sach ty
va hanh » van hanh, va thanh, va danh
cac xuc » cam xuc, cac nuoc, chat xuc
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va
mai hoi » mai khoi, dai hoi, lai hoi
xuc va » duc va, tuc va, luc va
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)). ((hieu ve) OR (hieu van)) cac xuc va 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)). ((hieu ve) OR (hieu van)) cac xuc va hanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((ma hoa) or (mai hoi)). ((hieu ve) OR (hieu van)) cac xuc va hanh vi cua tre*.