Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithms" » "modified multiobjective optimization algorithms", "modified multiobjective estimation algorithm", "modified multiobjective optimisation algorithm"
"modified nacl solution algorithms" » "modified nacl solution algorithm", "modified nacl evolution algorithm", "modified nacl convolution algorithms", "modified male solution algorithms", "modified near solution algorithms", "modified orca solution algorithms", "modified exact solution algorithms", "modified nodal solution algorithms"

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