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