Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithm" » "modified multiobjective optimization algorithms", "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithm"
"modified adam solution algorithm" » "modified adam evolution algorithm", "modified adam convolution algorithms", "modified adam evolutionary algorithm", "modified df solution algorithm", "modified near solution algorithm", "modified nodal solution algorithm"

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified multiobjective optimization algorithm\") OR (\"modified adam solution algorithm\"))~".
• Removing quotes may allow a broader search: (( modified multiobjective optimization algorithm ) OR ( modified adam solution algorithm ))~.
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