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

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