Perhaps you should try some spelling variations:
"a simulation algorithm" » "a solution algorithm", "a optimisation algorithm", "a estimation algorithms", "_ simulation algorithm"
"_ solutions algorithm" » "_ solution algorithm", "_ evolution algorithm", "_ evolutionary algorithm"
"policy estimation algorithm" » "policy optimization algorithm", "pose estimation algorithm", "motion estimation algorithm"

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: "((((\"a simulation algorithm\") OR (\"_ solutions algorithm\"))) OR (\"policy estimation algorithm\"))~".
• Removing quotes may allow a broader search: (((( a simulation algorithm ) OR ( _ solutions algorithm ))) OR ( policy estimation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (((("a simulation algorithm") OR ("_ solutions algorithm"))) OR ("policy estimation algorithm"))*.