Perhaps you should try some spelling variations:
ventilation algorithm » estimation algorithm, estimation algorithms
invasive ventilation » adaptive ventilation
evolution algorithm » solution algorithm, evolutionary algorithm, convolution algorithms
learning evolution » learning convolution, learning emotion
modified invasive » modified passive
modified learning » mobile learning, modified caging

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: (( modified invasive ventilation algorithm ) OR ( modified learning evolution algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (( modified invasive ventilation algorithm ) or ( modified learning evolution algorithm ))*.