Perhaps you should try some spelling variations:
may nguoi » tay nguoi, ma nguoi, lay nguoi
lam nguoi » dao nguoi
sach hoc » cach hoc, sach hoi, sach duoc
tao mach » tao bac, tao may, tim mach
mach hoc » cach hoc, dich hoc, anh hoc
te sach » toc sach
hoc may » hoc ma
hoc lam » duoc lam

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: (( te sach hoc may nguoi ) OR ( tao mach hoc lam nguoi ))~.
• Adding a wildcard symbol may retrieve word variants: (( te sach hoc may nguoi ) or ( tao mach hoc lam nguoi ))*.