Perhaps you should try some spelling variations:
optimization algorithm » optimization algorithms, optimisation algorithm, estimation algorithm
simulation algorithms » estimation algorithms, optimization algorithms, estimation algorithm
policy optimization » topology optimization
policy simulation » device simulation, plant simulation

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: (( policy optimization algorithm ) OR ( policy simulation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (( policy optimization algorithm ) or ( policy simulation algorithms ))*.