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

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 ventilation algorithms ) OR ( modified learning solution algorithm ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( modified invasive ventilation algorithms ) OR ( modified learning solution algorithm ))".
• Adding a wildcard symbol may retrieve word variants: (( modified invasive ventilation algorithms ) OR ( modified learning solution algorithm ))*.