Perhaps you should try some spelling variations:
mai khoi » mai khoa, tai khoa, cac khoi
te sach » toc sach
mai hoi » dai hoi, lai hoi, mai doi
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac
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 y nang ((ma hoa) OR (((mai hoi) OR (mai khoi)))). hieu ve cac xuc va hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ((ma hoa) or (((mai hoi) OR (mai khoi)))). hieu ve cac xuc va hanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((ma hoa) or (((mai hoi) OR (mai khoi)))). hieu ve cac xuc va hanh vi cua tre*.