Perhaps you should try some spelling variations:
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
ventilation algorithms » estimation algorithms, estimation algorithm, convolution algorithms
invasive ventilation » adaptive ventilation
aging optimization » staffing optimization, game optimization
modified invasive » modified passive
modified aging » 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 algorithms ) OR ( modified aging optimization algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (( modified invasive ventilation algorithms ) or ( modified aging optimization algorithms ))*.