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