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
same optimisation » game optimization, stage optimization, _ optimisation

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• The words AND, OR and NOT may confuse the search; try adding quotes: "(( same optimisation algorithm ) OR ( _ ((optimization algorithm) OR (optimization algorithms)) ))~".
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