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

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: (((("_ optimisation algorithm") OR ("_ optimizer algorithms"))) OR ("risk optimized algorithm"))~.
• Removing quotes may allow a broader search: (((( _ optimisation algorithm ) or ( _ optimizer algorithms ))) or ( risk optimized algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (((("_ optimisation algorithm") or ("_ optimizer algorithms"))) or ("risk optimized algorithm"))*.