Perhaps you should try some spelling variations:
"modified learning convolution algorithm" » "modified learning convolution algorithms", "modified learning evolution algorithm", "modified learning solution algorithm", "mobile learning convolution algorithm", "modified caging convolution algorithm"
"modified objective solution algorithmsss" » "modified objective solution algorithm", "modified objective evolution algorithm", "modified objective evolutionary algorithmsss", "modified objective allocation algorithmsss"

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified learning convolution algorithm\") OR (\"modified objective solution algorithmsss\"))~".
• Removing quotes may allow a broader search: (( modified learning convolution algorithm ) OR ( modified objective solution algorithmsss ))~.
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