Perhaps you should try some spelling variations:
"modified multiobjective optimizer algorithms" » "modified multiobjective optimization algorithms", "modified multiobjective optimized algorithms", "modified multiobjective optimized algorithm"
"modified thermal convolution algorithms" » "modified thermal evolution algorithm", "modified thermal solution algorithm"

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified thermal convolution algorithms\") OR (\"modified multiobjective optimizer algorithms\"))~".
• Removing quotes may allow a broader search: (( modified thermal convolution algorithms ) OR ( modified multiobjective optimizer algorithms ))~.
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