Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithms" » "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithms", "modified multiobjective estimation algorithm"
"modified model predictive algorithm" » "modified model predation algorithm", "modified model predators algorithm", "modified model reduction algorithm", "modified male predictive algorithm"

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