Perhaps you should try some spelling variations:
optimization algorithms » estimation algorithms, estimation algorithm, optimized algorithms
optimisation algorithm » estimation algorithm, estimation algorithms
pulses optimisation » pulses estimation
motion optimization » motion estimation, policy optimization, allocation optimization

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• The words AND, OR and NOT may confuse the search; try adding quotes: "(( pulses optimisation algorithm ) OR ( motion optimization algorithms ))~".
• Adding a wildcard symbol may retrieve word variants: (( pulses optimisation algorithm ) OR ( motion optimization algorithms ))*.