Perhaps you should try some spelling variations:
optimization algorithmss » optimization algorithms, estimation algorithms, estimation algorithm
optimisation algorithms » optimization algorithms, estimation algorithms, estimation algorithm
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
_ optimisation » _ optimization

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: (( _ ((optimization algorithmss) OR (optimisation algorithm)) ) OR ( _ optimisation algorithms ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( _ ((optimization algorithmss) OR (optimisation algorithm)) ) or ( _ optimisation algorithms ))~".
• Adding a wildcard symbol may retrieve word variants: (( _ ((optimization algorithmss) OR (optimisation algorithm)) ) or ( _ optimisation algorithms ))*.