Perhaps you should try some spelling variations:
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
objective estimation » objective optimization, objective allocation
predation algorithm » predators algorithm, estimation algorithm
model predation » model reduction, model predictive, model predicting
modified model » modified male

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( modified model predation algorithm ) OR ( modified objective estimation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (( modified model predation algorithm ) or ( modified objective estimation algorithms ))*.