Perhaps you should try some spelling variations:
kxy thuat » ky thuat, my thuat, ky thua
cac nganh » hoc nganh
nganh ki » nganh ky, nganh ke, nganh vi
ki thuat » ky thuat
thuat o » thuat do
tu canh » thu canh, tu chanh, tu can
o hoc » co hoc, mo hoc, so hoc
tranh » trinh, thanh, tran
toan » tran

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: (( tu cac nganh ki thuat o hoc ) OR ( tu canh tranh kxy thuat toan khoa ))~.
• Adding a wildcard symbol may retrieve word variants: (( tu cac nganh ki thuat o hoc ) or ( tu canh tranh kxy thuat toan khoa ))*.