Perhaps you should try some spelling variations:
sanh nganh » anh ngan, dang nganh, sach ngan
nganh xay » nganh mac, nganh ma, manh xay
xay thuat » ky thuat, my thuat, va thuat
toan hoc » van hoc, hoa hoc, tin hoc
y thuat » ky thuat, my thuat, kxy thuat
bo cac » bo cau, co cac, bo cam
o cac » o cao

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: (( do sanh nganh xay thuat toan hoc ) OR ( ((bo cac) OR (o cac)) nganh y thuat toan khoa ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( do sanh nganh xay thuat toan hoc ) or ( ((bo cac) OR (o cac)) nganh y thuat toan khoa ))~".
• Adding a wildcard symbol may retrieve word variants: (( do sanh nganh xay thuat toan hoc ) or ( ((bo cac) OR (o cac)) nganh y thuat toan khoa ))*.