Perhaps you should try some spelling variations:
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
ventilation algorithm » estimation algorithm, estimation algorithms, evolution algorithm
passive ventilation » adaptive ventilation, invasive ventilation
modified passive » modified adaptive
df optimization » _ optimization, qoe optimization, _ optimisation
modified df » modified _, modified adam, modified bi1

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

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