Perhaps you should try some spelling variations:
"modified allocation optimization algorithmsss" » "modified allocation optimization algorithms", "modified allocation optimisation algorithm", "modified allocation estimation algorithms", "modified location optimization algorithmsss"
"modified static estimation algorithm" » "modified static optimization algorithm"

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