Perhaps you should try some spelling variations:
estimations algorithms » estimation algorithms, estimation algorithm, optimization algorithms
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
sphere estimations » sphere estimation, cover estimations
_ optimisation » _ 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: "(( sphere estimations algorithms ) OR ( _ optimisation algorithm ))~".
• Adding a wildcard symbol may retrieve word variants: (( sphere estimations algorithms ) OR ( _ optimisation algorithm ))*.