Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
ban hanh » ban hang
cham xuc » cam xuc, chat xuc, cham soc
hieu va » lieu va, hieu qua
sang ma » tang ma, nang ma, sang tao
xuc ban » duc ban, cuc ban, quoc ban
hieu ve » hieu van
vi cua » vai cua, di cua
cua te » cua tu
ma hoi » mai hoi, xa hoi, ma hoa
y sang » _ sang, duy sang

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) OR (toc sach)) y sang ma hoi. ((hieu ve) OR (hieu va)) cham xuc ban hanh vi cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) y sang ma hoi. ((hieu ve) or (hieu va)) cham xuc ban hanh vi cua te~".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) y sang ma hoi. ((hieu ve) or (hieu va)) cham xuc ban hanh vi cua te*.