Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithms" » "modified multiobjective optimization algorithms", "modified multiobjective estimation algorithm", "modified multiobjective optimisation algorithm", "modified multiobjective approximation algorithms"
"modified policy optimization algorithms" » "modified policy optimisation algorithm", "modified policy estimation algorithm", "modified policy optimized algorithms", "modified topology optimization algorithms"

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• Removing quotes may allow a broader search: (( modified multiobjective estimation algorithms ) OR ( modified policy optimization algorithms ))~.
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