Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
va thanh » gia thanh, ban thanh, va tinh
hai cua » thai cua, hoi cua, lai cua
cac xuc » cam xuc, cac nuoc, chat xuc
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
lai roi » loi roi
lai hoi » dai hoi, lai hoa, mai hoi
ky dang » ky nang, ky danh
ve cac » va cac, vien cac
xuc va » duc va, tuc va, luc va

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: thuoc sach ky dang ((lai hoi) OR (lai roi)). hieu ve cac xuc va thanh ((dai cua) OR (hai cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ky dang ((lai hoi) OR (lai roi)). hieu ve cac xuc va thanh ((dai cua) or (hai cua)) tre~".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky dang ((lai hoi) OR (lai roi)). hieu ve cac xuc va thanh ((dai cua) or (hai cua)) tre*.