Perhaps you should try some spelling variations:
"sphere optimisation algorithm" » "sphere optimization algorithms", "sphere estimation algorithm", "sphere estimation algorithms"
"_ optimized algorithms" » "_ optimizer algorithms", "_ optimization algorithms", "_ optimizer algorithmss"
"_ optimized algorithm" » "_ 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: (("sphere optimisation algorithm") OR ((("_ optimized algorithms") OR ("_ optimized algorithm"))))~.
• Removing quotes may allow a broader search: (( sphere optimisation algorithm ) or ((( _ optimized algorithms ) or ( _ optimized algorithm ))))~.
• Adding a wildcard symbol may retrieve word variants: (("sphere optimisation algorithm") or ((("_ optimized algorithms") or ("_ optimized algorithm"))))*.