Perhaps you should try some spelling variations:
"modified charging estimation algorithmss" » "modified charging estimation algorithms", "modified charging estimation algorithm", "modified charging optimization algorithms", "modified charging station algorithmss", "modified caging estimation algorithmss", "modified carbon estimation algorithmss"
"modified objective optimization algorithm" » "modified multiobjective optimization algorithm", "modified objective optimization algorithms", "modified objective optimisation algorithm", "modified objective estimation algorithm"

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