Perhaps you should try some spelling variations:
hanh hoi » hanh thoi, hanh noi, hanh hoa
ve triet » va trien, su triet
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
qua cau » quan cau, qua cac, qua ca
loc va » hoc va, luc va
hoi ve » hoi va, moi ve, noi ve

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 lang xa hoi. hieu qua cau ((loc va) OR (duc va)) hanh hoi ve triet~.
• Adding a wildcard symbol may retrieve word variants: su sach ky lang xa hoi. hieu qua cau ((loc va) or (duc va)) hanh hoi ve triet*.