Perhaps you should try some spelling variations:
thanh di » thanh doi, thanh de, thanh do
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ky tang » ky nang, ky dang, kho tang
tang ma » mang may, tang van
hieu va » hieu qua
xuc van » duc van, luc van, xuc ban
vuc van » duc van, luc van, thuc van
ma hoi » mai hoi, xa hoi, ma hoa
di cua » dai cua, doi cua, de cua

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: tu sach ky tang ma hoi. ((hieu va) OR (lieu va)) cam ((xuc van) OR (vuc van)) thanh di cua vat~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky tang ma hoi. ((hieu va) or (lieu va)) cam ((xuc van) OR (vuc van)) thanh di cua vat~".
• Adding a wildcard symbol may retrieve word variants: tu sach ky tang ma hoi. ((hieu va) or (lieu va)) cam ((xuc van) OR (vuc van)) thanh di cua vat*.