Perhaps you should try some spelling variations:
tao nano » tao nganh, cao nang, tao nhan
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
cua tre » cua te, cua triet, dua tren
xuc van » duc van, luc van, vuc van
hieu va » lieu va, hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
bac hoc » bai hoc, bac ho
tao cao » bao cao, toan cao
cuu tre » cau tren, cau treo

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 ((tao nano) OR (tao cao)) bac hoc. hieu va cac xuc van hanh vai ((cua tre) OR (cuu tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((tao nano) or (tao cao)) bac hoc. hieu va cac xuc van hanh vai ((cua tre) OR (cuu tre))~".
• Adding a wildcard symbol may retrieve word variants: su sach ((tao nano) or (tao cao)) bac hoc. hieu va cac xuc van hanh vai ((cua tre) OR (cuu tre))*.