Perhaps you should try some spelling variations:
estimation algorithms » estimation algorithm, optimization algorithms, optimisation algorithm
optimized algorithms » optimized algorithm, optimization algorithms
optimizer algorithms » optimized algorithm, optimization 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: (( _ ((optimized algorithms) OR (optimizer algorithms)) ) OR ( qoe estimation algorithms ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( _ ((optimized algorithms) OR (optimizer algorithms)) ) or ( qoe estimation algorithms ))~".
• Adding a wildcard symbol may retrieve word variants: (( _ ((optimized algorithms) OR (optimizer algorithms)) ) or ( qoe estimation algorithms ))*.