Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
va thanh » gia thanh, ban thanh, va tinh
cham xuc » cam xuc, chat xuc, cham soc
qua cham » qua hai, qua cac, va cham
hoa hoi » khoa hoi, hoa hoc, hoa doi
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
va hanh » van hanh, va danh, ban hanh
cua tre » cua te, cuu tre, cua triet
ha hoi » ha noi, xa hoi, va hoi
vi cua » vai cua, di cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ky dang ((ha hoi) OR (hoa hoi)). hieu qua cham xuc ((va thanh) or (va hanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky dang ((ha hoi) OR (hoa hoi)). hieu qua cham xuc ((va thanh) OR (va hanh)) vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ky dang ((ha hoi) OR (hoa hoi)). hieu qua cham xuc ((va thanh) or (va hanh)) vi cua tre".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky dang ((ha hoi) OR (hoa hoi)). hieu qua cham xuc ((va thanh) or (va hanh)) vi cua tre*.