Perhaps you should try some spelling variations:
"modified notion optimization algorithms" » "modified notion optimisation algorithm", "modified notion estimation algorithm", "modified notion optimized algorithms", "modified network optimization algorithms", "modified policy optimization algorithms", "modified allocation optimization algorithms"
"modified policy estimation algorithms" » "modified policy estimation algorithm", "modified policy optimisation algorithm", "modified policy approximation algorithms", "modified policy optimization algorithms", "modified pose estimation algorithms", "modified motion estimation algorithms"

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