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.

• Performing a fuzzy search may retrieve terms with similar spellings: (( pose ((optimisation algorithm) OR (estimation algorithms)) ) or ( qoe optimization algorithm ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( pose ((optimisation algorithm) OR (estimation algorithms)) ) OR ( qoe optimization algorithm )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( pose ((optimisation algorithm) OR (estimation algorithms)) ) or ( qoe optimization algorithm ))".
• Adding a wildcard symbol may retrieve word variants: (( pose ((optimisation algorithm) OR (estimation algorithms)) ) or ( qoe optimization algorithm ))*.