Perhaps you should try some spelling variations:
"modified allocation estimation algorithms" » "modified allocation optimization algorithms", "modified motion estimation algorithms", "modified allocation estimation algorithm", "modified allocation optimisation algorithm"
"modified choosing optimized algorithm" » "modified choosing optimized algorithms", "modified choosing optimizer algorithms", "modified choosing optimizer algorithm", "modified caging optimized algorithm"

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