Perhaps you should try some spelling variations:
"modified df optimizer algorithms" » "modified df optimized algorithms", "modified df optimized algorithm", "modified df optimization algorithms", "modified _ optimized algorithms", "modified _ optimize algorithms", "modified _ optimizer algorithms", "modified adam optimizer algorithms", "modified bi1 optimizer algorithms"
"modified objective solution algorithm" » "modified objective evolutionary algorithm", "modified objective allocation algorithm", "modified objective evolution algorithm", "modified objective convolution algorithms"

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