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

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