Perhaps you should try some spelling variations:
tay nguoi » toc nguoi, dao nguoi, lam nguoi
sach hoi » sach doi, sach moi, cach thoi
ma nguoi » ca nguoi, va nguoi, cua nguoi
mach hoc » cach hoc, dich hoc, anh hoc
te sach » toc sach
tu mach » tu cach, tu manh, tu hach
hoc tay » toc tay, hoc tap, hoc may
hoi ma » hoi va, hoi ha, hoi ba

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 hoi ma nguoi ) OR ( tu mach hoc tay nguoi ))~.
• Adding a wildcard symbol may retrieve word variants: (( te sach hoi ma nguoi ) or ( tu mach hoc tay nguoi ))*.