Perhaps you should try some spelling variations:
estimation algorithmss » estimation algorithm, optimization algorithms
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
policy estimation » policy optimization, pose estimation, motion estimation
male estimation » pose 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: (( modified policy estimation algorithmss ) or ( modified male estimation algorithms ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( modified policy estimation algorithmss ) OR ( modified male estimation algorithms )).
• Adding a wildcard symbol may retrieve word variants: (( modified policy estimation algorithmss ) or ( modified male estimation algorithms ))*.