Perhaps you should try some spelling variations:
thanh do » thanh de, thanh pho, thanh hoa
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
tang ma » mang may, tang van
tang xa » trang xa, lang xa, tang ha
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
do cua » doi cua, co cua, de cua
va lam » van lam, va lap

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 y ((tang xa) OR (tang ma)) hoi. hieu va lam ((xuc va) OR (tuc va)) thanh do cua tre~.
• Adding a wildcard symbol may retrieve word variants: su sach y ((tang xa) or (tang ma)) hoi. hieu va lam ((xuc va) or (tuc va)) thanh do cua tre*.