Perhaps you should try some spelling variations:
"_ optimization algorithms" » "_ optimisation algorithm", "_ estimation algorithm", "_ optimized algorithms"
"risk estimation algorithms" » "risk estimation algorithm", "risk optimisation algorithm", "risk approximation algorithms", "pose estimation algorithms"
"_ optimized algorithm" » "_ optimized algorithms", "_ optimizer algorithms"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"_ optimized algorithm\") OR (\"_ optimization algorithms\"))) OR (\"risk estimation algorithms\"))~".
• Removing quotes may allow a broader search: (((( _ optimized algorithm ) OR ( _ optimization algorithms ))) OR ( risk estimation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (((("_ optimized algorithm") OR ("_ optimization algorithms"))) OR ("risk estimation algorithms"))*.