Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithm" » "modified multiobjective optimization algorithms", "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithm"
"modified up evolution algorithm" » "modified up solution algorithm", "modified up evolutionary algorithm", "modified up convolution algorithms", "modified _ evolution algorithm", "modified co evolution algorithm", "modified up solutions algorithm", "modified df evolution algorithm", "modified bi1 evolution algorithm"

You may be able to get more results by adjusting your search query.

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