Perhaps you should try some spelling variations:
"modified multiobjective optimized algorithm" » "modified multiobjective optimization algorithm", "modified multiobjective optimized algorithms", "modified multiobjective optimizer algorithms"
"modified aging optimization algorithms" » "modified aging optimisation algorithm", "modified aging estimation algorithms", "modified aging estimation algorithm", "modified staffing optimization algorithms", "modified game optimization algorithms", "modified caging optimization algorithms"

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