Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
nhan luc » nang luc
thanh ky » hanh ky, than ky, thanh tay
thanh ly » thanh lay, thanh le, khanh ly
cham luc » cham soc, cham cuu, chat lua
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang

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 ky sang ma hoa. hieu ve ((cham luc) OR (nhan luc)) gia ((thanh ly) OR (thanh ky)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky sang ma hoa. hieu ve ((cham luc) or (nhan luc)) gia ((thanh ly) OR (thanh ky)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: toc sach ky sang ma hoa. hieu ve ((cham luc) or (nhan luc)) gia ((thanh ly) OR (thanh ky)) cua tre*.