Perhaps you should try some spelling variations:
estimation algorithmss » estimation algorithms, estimation algorithm, optimization algorithms
parameter estimates » parameter estimation
estimates algorithm » estimation algorithm, estimation algorithms
cost estimation » pose estimation, risk estimation, cover estimations

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: "(( cost estimation algorithmss ) OR ( parameter estimates algorithm ))~".
• Adding a wildcard symbol may retrieve word variants: (( cost estimation algorithmss ) OR ( parameter estimates algorithm ))*.