Perhaps you should try some spelling variations:
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
parameter estimates » parameter estimation
estimates algorithm » estimation algorithm, estimation algorithms
policy optimisation » policy optimization, topology optimization

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: (( parameter estimates algorithm ) OR ( policy optimisation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (( parameter estimates algorithm ) or ( policy optimisation algorithm ))*.