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

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("_ optimized algorithm") OR ((("risk optimisation algorithm") OR ("_ optimisation algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"_ optimized algorithm\") or (((\"risk optimisation algorithm\") OR (\"_ optimisation algorithm\"))))~".
• Removing quotes may allow a broader search: (( _ optimized algorithm ) or ((( risk optimisation algorithm ) OR ( _ optimisation algorithm ))))~.
• Adding a wildcard symbol may retrieve word variants: (("_ optimized algorithm") or ((("risk optimisation algorithm") OR ("_ optimisation algorithm"))))*.