Perhaps you should try some spelling variations:
ventilation algorithm » estimation algorithm, estimation algorithms, evolution algorithm
invasive ventilation » adaptive ventilation
optimized algorithm » optimized algorithms, optimizer algorithms
modified invasive » modified passive
modified game » modified male, modified adam

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

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