Perhaps you should try some spelling variations:
"modified objective optimization algorithm" » "modified multiobjective optimization algorithm", "modified objective optimization algorithms", "modified objective optimisation algorithm", "modified objective estimation algorithm"
"mapping learning aided algorithm" » "machine learning aided algorithm", "enabling learning aided algorithm", "mapping learning adam algorithm", "mapping learning driven algorithm", "mapping learning winner algorithm", "mapping learning based algorithm", "mapping learning model algorithm"

Try widening your search to All Fields.

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

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