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

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("_ simulation algorithm") OR ("a estimation algorithm"))) OR ("policy optimisation algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"_ simulation algorithm\") OR (\"a estimation algorithm\"))) OR (\"policy optimisation algorithm\"))".
• Removing quotes may allow a broader search: (((( _ simulation algorithm ) OR ( a estimation algorithm ))) OR ( policy optimisation algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("_ simulation algorithm") OR ("a estimation algorithm"))) OR ("policy optimisation algorithm"))*.