Perhaps you should try some spelling variations:
"policy optimization algorithms" » "policy optimisation algorithm", "policy estimation algorithms", "policy estimation algorithm", "topology optimization algorithms"
"_ simulation algorithm" » "_ estimation algorithm", "_ solution algorithm", "_ optimisation algorithm"
"a evolution algorithm" » "a solution algorithm", "a evolutionary algorithm", "a convolution algorithms", "_ evolution algorithm", "co evolution algorithm", "_ evaluation algorithm"

Try widening your search to All Fields.

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

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