Perhaps you should try some spelling variations:
estimation algorithmssss » estimation algorithm
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
parameter estimation » parameter estimates, parameter optimization
post estimation » pose estimation, risk estimation, pulses estimation

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( parameter estimation algorithmssss ) or ( post estimation algorithms ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( parameter estimation algorithmssss ) OR ( post estimation algorithms ))*.