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