Perhaps you should try some spelling variations:
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
bayesian optimisation » bayesian optimization
solution algorithm » evolution algorithm, convolution algorithms, evolutionary algorithm
modified invasive » modified passive

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