Perhaps you should try some spelling variations:
cach thuc » anh thuc, cac thu
su sach » so sach, vu sach
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
va cach » va cac
hieu va » lieu va, hieu qua
so sanh » do sanh
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
du cua » duy cua, dau cua, dum cua
x hoi » xa hoi, o hoi, x ho

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) OR (so sanh)) y nang x hoi. hieu va cach thuc ((va danh) OR (va hanh)) du cua tre~.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sanh)) y nang x hoi. hieu va cach thuc ((va danh) or (va hanh)) du cua tre*.