Perhaps you should try some spelling variations:
"modified multiobjective optimizer algorithms" » "modified multiobjective optimization algorithms", "modified multiobjective optimized algorithms", "modified multiobjective optimized algorithm"
"modified df splitting algorithm" » "modified deep splitting algorithm", "modified dual splitting algorithm", "modified _ splitting algorithm", "modified adam splitting algorithm", "modified bi1 splitting algorithm"

You may be able to get more results by adjusting your search query.

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