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