Perhaps you should try some spelling variations:
thanh moi » thanh loi, thanh hoa, thanh hai
ban thanh » ban hanh, ban hang
nang ma » tang ma, sang ma, nang cao
hieu va » hieu qua
dau luc » cau luc, dau luan, dau nuoc
luc ban » duc ban, cuc ban, luc bat
moi cua » hoi cua, doi cua, moi quan
cua tre » cua te, cuu tre, cua triet
su xac » pu xac, su cac
xac ky » cac ky, sac ky, bac ky
ma hoi » mai hoi, xa hoi, ma hoa

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 xac ky nang ma hoi. ((hieu va) OR (lieu va)) dau luc ban thanh moi cua tre~.
• Adding a wildcard symbol may retrieve word variants: su xac ky nang ma hoi. ((hieu va) or (lieu va)) dau luc ban thanh moi cua tre*.