Perhaps you should try some spelling variations:
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
optimized algorithms » optimizer algorithms, optimization algorithms
optimized algorithm » optimizer algorithms
qoe estimation » pose estimation, _ estimation, cover estimations

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

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