Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
ky tang » ky nang, ky dang, kho tang
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
dan dai » dat dai, can dai, dan dat
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, me hoi
ve cam » ve cham, ve cac, va cam
va dan » ca dan, va dao, va dau

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: vu sach ky tang ((ma hoi) OR (ma hoa)). hieu ve cam duc va dan dai cua tre~.
• Adding a wildcard symbol may retrieve word variants: vu sach ky tang ((ma hoi) or (ma hoa)). hieu ve cam duc va dan dai cua tre*.