Perhaps you should try some spelling variations:
dang tao » sang tao, nang tao, vang tao
manh hai » lanh hai, minh hai, thanh hai
banh hai » lanh hai, bang hai, benh hai
su sach » so sach, vu sach
cam duc » cam xuc, cao duc, pham duc
duc ban » duc tan, duc van, dua ban
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
hieu va » hieu qua
tao hoi » tao khoi, tao boi, tay hoi
ky dang » ky nang, ky danh

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: su sach ky dang tao hoi. ((hieu va) OR (lieu va)) cam duc ban ((banh hai) OR (manh hai)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky dang tao hoi. ((hieu va) OR (lieu va)) cam duc ban ((banh hai) or (manh hai)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: su sach ky dang tao hoi. ((hieu va) OR (lieu va)) cam duc ban ((banh hai) or (manh hai)) cua tre*.