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

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( modified invasive evolution algorithm ) or ( modified passive ventilation algorithmss ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( modified invasive evolution algorithm ) OR ( modified passive ventilation algorithmss )).
• Adding a wildcard symbol may retrieve word variants: (( modified invasive evolution algorithm ) or ( modified passive ventilation algorithmss ))*.