Perhaps you should try some spelling variations:
thanh de » hanh de, thanh ve, thanh do
thanh di » thanh doi, thanh do, thanh dinh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
xuc van » duc van, luc van, vuc van
hieu va » lieu va, hieu qua
sang ma » tang ma, nang ma, sang tao
hieu ve » hieu van
ky sang » ky nang, ky dang, ky tang
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: tu sach ky sang ma hoi. ((hieu ve) OR (hieu va)) cam xuc van ((thanh di) OR (thanh de)) cua vat~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky sang ma hoi. ((hieu ve) or (hieu va)) cam xuc van ((thanh di) OR (thanh de)) cua vat~".
• Adding a wildcard symbol may retrieve word variants: tu sach ky sang ma hoi. ((hieu ve) or (hieu va)) cam xuc van ((thanh di) OR (thanh de)) cua vat*.