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

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

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