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

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