Perhaps you should try some spelling variations:
"modified parameters optimization algorithms" » "modified parameter optimization algorithms", "modified parameter estimation algorithms", "modified parameters optimisation algorithm", "modified parameters estimation algorithms", "modified parameters estimation algorithm", "modified parameters optimisation algorithms", "modified parameters estimation algorithmss"
"modified response optimization algorithm" » "modified response optimisation algorithm", "modified response estimation algorithm", "modified response estimation algorithms"

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified parameters optimization algorithms\") OR (\"modified response optimization algorithm\"))~".
• Removing quotes may allow a broader search: (( modified parameters optimization algorithms ) OR ( modified response optimization algorithm ))~.
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