Perhaps you should try some spelling variations:
estimation algorithmss » estimation algorithms, estimation algorithm, optimization algorithms
parameter optimisation » parameter optimization, parameter estimation
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
robust estimation » robust optimization, pose estimation, risk estimation

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

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