Perhaps you should try some spelling variations:
"modified multiobjective optimizer algorithms" » "modified multiobjective optimization algorithms", "modified multiobjective optimized algorithms", "modified multiobjective optimized algorithm"
"modified make optimisation algorithm" » "modified make optimization algorithms", "modified make estimation algorithm", "modified make estimation algorithms", "modified market optimization algorithm", "modified game optimization algorithm", "modified stage optimization algorithm", "modified male optimisation algorithm"

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