Perhaps you should try some spelling variations:
estimation algorithmss » estimation algorithms, estimation algorithm, optimization algorithms
estimates algorithms » estimation algorithms, estimation algorithm, optimized algorithms
parameter estimates » parameter estimation
same estimation » pose estimation, sphere estimation

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( same estimation algorithmss ) or ( parameter estimates algorithms ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( same estimation algorithmss ) OR ( parameter estimates algorithms )).
• Adding a wildcard symbol may retrieve word variants: (( same estimation algorithmss ) or ( parameter estimates algorithms ))*.