Perhaps you should try some spelling variations:
may nguoi » ma nguoi, lay nguoi, mac nguoi
tay nguoi » toc nguoi, dao nguoi
sach hoi » sach doi, sach moi, cach thoi
mach hoc » cach hoc, dich hoc, anh hoc
te sach » toc sach
hoi may » hoc may, hoa may, noi may
tu mach » tu cach, tu manh, tu hach
hoc tay » toc tay, hoc tap, hoc may

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( te sach hoi may nguoi ) OR ( tu mach hoc tay nguoi ))~".
• Adding a wildcard symbol may retrieve word variants: (( te sach hoi may nguoi ) OR ( tu mach hoc tay nguoi ))*.