Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hanh cho » danh cho, han cho, anh cho
hang cho » sang cho, hang khoa, phong cho
sach ky » sac ky, sach y, sach ty
qua cac » cua cac
cac xuc » cam xuc, cac nuoc, chat xuc
cuu tre » cua tre, cau tren, cau treo
co hoi » co hoc
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang ((co hoi) or (co loi)). hieu qua cac xuc va ((hanh cho) OR (hang cho)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang ((co hoi) OR (co loi)). hieu qua cac xuc va ((hanh cho) OR (hang cho)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang ((co hoi) or (co loi)). hieu qua cac xuc va ((hanh cho) OR (hang cho)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang ((co hoi) or (co loi)). hieu qua cac xuc va ((hanh cho) OR (hang cho)) cuu tre*.