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

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

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