Perhaps you should try some spelling variations:
objective optimization » multiobjective optimization
optimization algorithm » optimization algorithms, optimisation algorithm, estimation algorithm
predation algorithm » predators algorithm, estimation algorithm
learning predation » learning prediction, learning emotion
modified learning » mobile learning, modified caging

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 objective optimization algorithm ) OR ( modified learning predation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (( modified objective optimization algorithm ) or ( modified learning predation algorithm ))*.