Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, hieu ve
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
ky danh » ky anh, ky dang
danh xa » danh ca, dinh xa, canh xa
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di 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: su sach ky danh xa hoi. ((hieu van) OR (lieu va)) cam ((xuc va) OR (tuc va)) hanh vi cua tre~.
• Adding a wildcard symbol may retrieve word variants: su sach ky danh xa hoi. ((hieu van) or (lieu va)) cam ((xuc va) or (tuc va)) hanh vi cua tre*.