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