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

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