Perhaps you should try some spelling variations:
"modified network optimisation algorithm" » "modified network optimization algorithms", "modified network estimation algorithm", "modified network estimation algorithms", "modified network optimization algorithm", "certified network optimisation algorithm", "defined network optimisation algorithm", "modified near optimisation algorithm"
"modified invasive optimized algorithms" » "modified invasive optimized algorithm", "modified invasive optimizer algorithms", "modified invasive optimization algorithms", "modified passive optimized algorithms"

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