Perhaps you should try some spelling variations:
estimation algorithmss » estimation algorithms, estimation algorithm, optimization algorithms
optimization algorithm » optimization algorithms, optimisation algorithm, estimation algorithm
game optimization » stage optimization, qoe optimization, market optimization
risk estimation » pose estimation

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

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