Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
cau treo » cau theo, cau tren, cau triet
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
danh vi » hanh vi, dinh vi, danh di
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va
vi cau » va cau, ve cau, di cau

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: toc sach y nang ma hoi. hieu ve cam ((xuc va) OR (tuc xa)) danh vi cau treo~.
• Adding a wildcard symbol may retrieve word variants: toc sach y nang ma hoi. hieu ve cam ((xuc va) or (tuc xa)) danh vi cau treo*.