Perhaps you should try some spelling variations:
"modified objective solution algorithm" » "modified objective evolutionary algorithm", "modified objective allocation algorithm", "modified objective evolution algorithm", "modified objective convolution algorithms"
"modified time estimation algorithm" » "modified pose estimation algorithm", "modified risk estimation algorithm", "modified motion estimation algorithm", "modified bi1 estimation algorithm", "modified male estimation algorithm"

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