Perhaps you should try some spelling variations:
"modified up convolution algorithms" » "modified up evolution algorithm", "modified up solution algorithm", "modified _ convolution algorithms", "modified df convolution algorithms", "modified bi1 convolution 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 objective allocation algorithm\") OR (\"modified up convolution algorithms\"))~".
• Removing quotes may allow a broader search: (( modified objective allocation algorithm ) OR ( modified up convolution algorithms ))~.
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