Perhaps you should try some spelling variations:
thanh lay » thanh lap, thanh tay, thanh lam
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
cham luc » cham soc, cham cuu, chat lua
thanh ky » hanh ky, than ky, thanh tay
nhan luc » nang luc
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
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.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ky sang ma hoa. hieu van ((cham luc) or (nhan luc)) va ((thanh ky) or (thanh lay)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky sang ma hoa. hieu van ((cham luc) OR (nhan luc)) va ((thanh ky) OR (thanh lay)) cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach ky sang ma hoa. hieu van ((cham luc) or (nhan luc)) va ((thanh ky) or (thanh lay)) cua tre*.