Perhaps you should try some spelling variations:
"modified objective optimisation algorithm" » "modified objective optimization algorithm", "modified multiobjective optimization algorithm", "modified objective optimization algorithms", "modified objective estimation algorithm", "modified objective estimation algorithms"
"modified multiobjective lot algorithms" » "modified multiobjective _ algorithms", "modified multiobjective mom algorithm"

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