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

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "\"((\\"qoe estimation algorithms\\") or (\\"same ((optimizer algorithms) OR (optimized algorithm))\\"))\"".
• Removing quotes may allow a broader search: (( qoe estimation algorithms ) or ( same ((optimizer algorithms) OR (optimized algorithm)) )).