Perhaps you should try some spelling variations:
dao nguoi » cho nguoi
tinh hoc » sinh hoc, tin hoc, hinh hoc
va nguoi » ca nguoi, cua nguoi, hoa nguoi
mach hoc » cach hoc, dich hoc, anh hoc
te tinh » tue tinh, tre tinh, ve tinh
su mach » su sach
hoc dao » hoc dan, hoc cao, hoc dai

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( te tinh hoc va nguoi ) or ( su mach hoc dao nguoi ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te tinh hoc va nguoi ) OR ( su mach hoc dao nguoi ))*.