Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
thanh ly » thanh lay, thanh ky, thanh le
nhan luc » nang luc
cham luc » cham soc, cham cuu, chat lua
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, mang may
cua tre » cua te, cuu tre, cua triet
ly cua » le cua

You may be able to get more results by adjusting your search query.

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