Perhaps you should try some spelling variations:
multiobjective optimisation » multiobjective optimization, objective optimization
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
modified agent » modified caging
agent based » patent based, event based, geant4 based

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 agent based algorithm ) OR ( modified multiobjective optimisation algorithm ))~".
• Adding a wildcard symbol may retrieve word variants: (( modified agent based algorithm ) OR ( modified multiobjective optimisation algorithm ))*.