Perhaps you should try some spelling variations:
parameter estimates » parameter estimation
estimates algorithm » estimation algorithm, estimation algorithms
solution algorithm » evolution algorithm, convolution algorithms, evolutionary algorithm
learning solution » learning convolution, learning emotion
how learning » shot learning, when learning, _ learning

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• The words AND, OR and NOT may confuse the search; try adding quotes: "(( how learning solution algorithm ) OR ( modified parameter estimates algorithm ))~".
• Adding a wildcard symbol may retrieve word variants: (( how learning solution algorithm ) OR ( modified parameter estimates algorithm ))*.