Perhaps you should try some spelling variations:
optimization algorithm » optimization algorithms, optimisation algorithm, estimation algorithms
simulation algorithm » solution algorithm, optimisation algorithm, estimation algorithms
policy optimization » topology optimization
a simulation » _ simulation
a estimation » _ estimation, a destination, _ estimating

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((( a simulation algorithm ) or ( a estimation algorithm ))) or ( policy optimization algorithm ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( a simulation algorithm ) OR ( a estimation algorithm ))) OR ( policy optimization algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((( a simulation algorithm ) or ( a estimation algorithm ))) or ( policy optimization algorithm ))*.