Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithm" » "modified multiobjective optimization algorithms", "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithm"
"when learning emotion algorithm" » "when learning evolution algorithm", "when learning estimation algorithm", "when learning predation algorithm", "when learning method algorithm", "deep learning emotion algorithm", "how learning emotion algorithm", "shot learning emotion algorithm"

Try widening your search to All Fields.

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