Perhaps you should try some spelling variations:
optimisation algorithms » optimisation algorithm, optimization algorithms, estimation algorithms
ventilation algorithms » estimation algorithms, estimation algorithm, convolution algorithms
passive ventilation » adaptive ventilation, invasive ventilation
modified passive » modified adaptive

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 passive ventilation algorithms ) OR ( modified _ optimisation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (( modified passive ventilation algorithms ) or ( modified _ optimisation algorithms ))*.