Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithm" » "modified multiobjective optimization algorithms", "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithm"
"mapping learning a algorithm" » "machine learning a algorithm", "enabling learning a algorithm", "mapping learning _ algorithm", "mapping learning _ algorithms", "mapping learning adam algorithm"

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 a algorithm") OR ("modified multiobjective optimization algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"mapping learning a algorithm\") OR (\"modified multiobjective optimization algorithm\"))*".
• Removing quotes may allow a broader search: (( mapping learning a algorithm ) OR ( modified multiobjective optimization algorithm ))*.