Perhaps you should try some spelling variations:
optimisation algorithmsss » optimization algorithms, estimation algorithms
parameters optimisation » parameter optimization, parameter estimation
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
risk optimisation » _ optimisation, risk estimation

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: (( parameters optimisation algorithm ) OR ( risk optimisation algorithmsss ))~.
• Adding a wildcard symbol may retrieve word variants: (( parameters optimisation algorithm ) or ( risk optimisation algorithmsss ))*.