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

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("risk optimisation algorithm") or ((("_ optimizer algorithms") or ("_ optimise algorithm"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("risk optimisation algorithm") OR ((("_ optimizer algorithms") OR ("_ optimise algorithm")))).
• Removing quotes may allow a broader search: (( risk optimisation algorithm ) or ((( _ optimizer algorithms ) or ( _ optimise algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("risk optimisation algorithm") or ((("_ optimizer algorithms") or ("_ optimise algorithm"))))*.