Perhaps you should try some spelling variations:
optimization algorithms » optimisation algorithm, estimation algorithm, optimized algorithms
estimation algorithms » estimation algorithm, optimisation algorithm, approximation algorithms
optimized algorithm » optimized algorithms, optimizer algorithms
qoe optimization » game optimization, _ optimization, stage optimization

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( qoe optimization algorithms ) or ( robust ((estimation algorithms) or (optimized algorithm)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( qoe optimization algorithms ) OR ( robust ((estimation algorithms) OR (optimized algorithm)) )).
• Adding a wildcard symbol may retrieve word variants: (( qoe optimization algorithms ) or ( robust ((estimation algorithms) or (optimized algorithm)) ))*.