Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithms" » "modified multiobjective optimization algorithms", "modified multiobjective estimation algorithm", "modified multiobjective optimisation algorithm", "modified multiobjective approximation algorithms"
"modified thermal optimization algorithms" » "modified thermal optimisation algorithm", "modified thermal estimation algorithm", "modified thermal optimized algorithms", "modified global optimization algorithms", "modified thermal activation algorithms", "modified thermal oxidation algorithms"

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