Perhaps you should try some spelling variations:
"modified write estimation algorithmss" » "modified write estimation algorithms", "modified write estimation algorithm", "modified write optimization algorithms", "modified risk estimation algorithmss", "modified pose estimation algorithmss"
"modified multiobjective optimization algorithm" » "modified multiobjective optimization algorithms", "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithm"

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