Perhaps you should try some spelling variations:
"policy optimisation algorithm" » "policy optimization algorithms", "policy estimation algorithm", "policy estimation algorithms", "policy optimization algorithm", "topology optimization algorithm"
"a solution algorithm" » "a evolution algorithm", "a convolution algorithms", "a evolutionary algorithm", "_ solution algorithm", "_ solutions algorithm", "up solutions algorithm"
"nacl solution algorithm" » "nacl evolution algorithm", "nacl convolution algorithms", "nacl evolutionary algorithm", "exact solution algorithm", "nodal solution 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: (("policy optimisation algorithm") or ((("a solution algorithm") or ("nacl solution algorithm"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("policy optimisation algorithm") OR ((("a solution algorithm") OR ("nacl solution algorithm")))).
• Removing quotes may allow a broader search: (( policy optimisation algorithm ) or ((( a solution algorithm ) or ( nacl solution algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("policy optimisation algorithm") or ((("a solution algorithm") or ("nacl solution algorithm"))))*.