Perhaps you should try some spelling variations:
sang tao » hang tai
nam treo » nam theo, nam tren, nam tro
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky sang » ky nang, ky dang, ky tang
tao hoi » tao khoi, tao boi, tay hoi
hieu va » hieu qua
mai nam » hai nam, loai nam

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: te sach ky sang tao hoi. ((hieu va) OR (lieu va)) cac dan ((ca daoh) OR (ca dao)) mai nam treo~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky sang tao hoi. ((hieu va) OR (lieu va)) cac dan ((ca daoh) or (ca dao)) mai nam treo~".
• Adding a wildcard symbol may retrieve word variants: te sach ky sang tao hoi. ((hieu va) OR (lieu va)) cac dan ((ca daoh) or (ca dao)) mai nam treo*.