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

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

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