Perhaps you should try some spelling variations:
"modified multiobjective optimized algorithm" » "modified multiobjective optimization algorithm", "modified multiobjective optimized algorithms", "modified multiobjective optimizer algorithms"
"new learning method algorithm" » "new learning mom algorithm", "new learning methods algorithm", "new graining methods algorithm", "new learning emotion algorithm", "how learning method algorithm", "deep learning method algorithm", "when learning method algorithm"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("modified multiobjective optimized algorithm") or ("new learning method algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified multiobjective optimized algorithm") OR ("new learning method algorithm")).
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