Perhaps you should try some spelling variations:
parameters optimisation » parameter optimization, parameter estimation
estimation algorithmss » estimation algorithms, estimation algorithm, optimization algorithms
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
motion » notion

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( motion estimation algorithmss ) or ( parameters optimisation algorithm ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( motion estimation algorithmss ) OR ( parameters optimisation algorithm ))*.