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

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• Performing a fuzzy search may retrieve terms with similar spellings: (("modified caging optimization algorithm") OR ("modified parameter optimization algorithmss"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified caging optimization algorithm\") OR (\"modified parameter optimization algorithmss\"))*".
• Removing quotes may allow a broader search: (( modified caging optimization algorithm ) OR ( modified parameter optimization algorithmss ))*.