Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithms" » "modified multiobjective optimization algorithms", "modified multiobjective estimation algorithm", "modified multiobjective optimisation algorithm"
"modified minimal solution algorithm" » "modified minimal evolution algorithm", "modified minimal convolution algorithms", "modified minimal evolutionary algorithm", "modified thermal solution algorithm", "modified optimal solution algorithm", "modified nodal solution algorithm"

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• Removing quotes may allow a broader search: (( modified multiobjective estimation algorithms ) OR ( modified minimal solution algorithm ))~.
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