Perhaps you should try some spelling variations:
estimation algorithmss » estimation algorithms, estimation algorithm, optimization algorithms
objective optimization » multiobjective optimization
optimization algorithm » optimization algorithms, optimisation algorithm, estimation algorithm
modified pose » modified male, modified passive

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( modified pose estimation algorithmss ) OR ( modified objective optimization algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (( modified pose estimation algorithmss ) or ( modified objective optimization algorithm ))*.