Perhaps you should try some spelling variations:
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
evolution algorithm » solution algorithm, evolutionary algorithm, convolution algorithms
positive evolution » positive solutions
modified positive » modified passive, modified adaptive
modified invasive » modified passive

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 positive evolution algorithm ) OR ( modified invasive optimisation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (( modified positive evolution algorithm ) or ( modified invasive optimisation algorithm ))*.