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

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 game optimized algorithms ) OR ( modified invasive estimation algorithms ))~".
• Adding a wildcard symbol may retrieve word variants: (( modified game optimized algorithms ) OR ( modified invasive estimation algorithms ))*.