Perhaps you should try some spelling variations:
thanh di » thanh doi, thanh de, thanh do
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
tang xa » trang xa, lang xa, tang ha
tang ma » mang may, tang van
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
di cua » dai cua, doi 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 ky ((tang xa) OR (tang ma)) hoi. hieu va lam ((xuc va) OR (tuc va)) thanh di cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((tang xa) or (tang ma)) hoi. hieu va lam ((xuc va) OR (tuc va)) thanh di cua tre~".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((tang xa) or (tang ma)) hoi. hieu va lam ((xuc va) OR (tuc va)) thanh di cua tre*.