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

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