Perhaps you should try some spelling variations:
"modified based evaluation algorithms" » "modified based evolution algorithm", "modified based estimation algorithms", "modified based convolution algorithms", "modified load evaluation algorithms", "modified based gradation algorithms", "modified large evaluation algorithms", "modified male evaluation algorithms"
"modified objective allocation algorithm" » "modified objective estimation algorithm", "modified objective evolution algorithm", "modified objective predation algorithm"

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