Perhaps you should try some spelling variations:
optimization algorithms » estimation algorithms, estimation algorithm, optimized algorithms
optimization algorithm » estimation algorithm, estimation algorithms, optimized algorithm
optimisation algorithm » estimation algorithm, estimation algorithms
cover optimization » qoe optimization, game optimization

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

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