Perhaps you should try some spelling variations:
optimization algorithms » estimation algorithms, estimation algorithm, optimized algorithms
optimisation algorithm » estimation algorithm, estimation algorithms
sphere optimisation » sphere estimation
game optimization » stage optimization, qoe optimization, market optimization

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( game optimization algorithms ) OR ( sphere optimisation algorithm ))~".
• Adding a wildcard symbol may retrieve word variants: (( game optimization algorithms ) OR ( sphere optimisation algorithm ))*.