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