Perhaps you should try some spelling variations:
"modified network optimisation algorithmsssss" » "modified network optimisation algorithm", "modified network optimization algorithms", "modified network optimization algorithmsssss", "certified network optimisation algorithmsssss", "defined network optimisation algorithmsssss", "modified near optimisation algorithmsssss"
"modified objective optimization algorithm" » "modified multiobjective optimization algorithm", "modified objective optimization algorithms", "modified objective optimisation algorithm", "modified objective estimation algorithm"

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