Perhaps you should try some spelling variations:
"modified objective optimisation algorithmss" » "modified objective optimisation algorithm", "modified objective optimization algorithms", "modified objective estimation algorithms", "modified objective optimization algorithmss", "modified multiobjective optimization algorithmss"
"modified parameter optimized algorithms" » "modified parameter optimized algorithm", "modified parameter optimizer algorithms", "modified parameter optimization algorithms"

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