Perhaps you should try some spelling variations:
"modified parameter optimization algorithms" » "modified parameter optimisation algorithm", "modified parameter estimation algorithms", "modified parameter estimation algorithm", "modified parameters optimization algorithms"
"modified objective predators algorithm" » "modified objective predation algorithm"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("modified parameter optimization algorithms") OR ("modified objective predators algorithm"))~.
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• Removing quotes may allow a broader search: (( modified parameter optimization algorithms ) OR ( modified objective predators algorithm ))*.