Perhaps you should try some spelling variations:
"modified multiobjective optimized algorithm" » "modified multiobjective optimization algorithm", "modified multiobjective optimized algorithms", "modified multiobjective optimizer algorithms"
"mapping learning evolutionary algorithm" » "mapping learning evolution algorithm", "mapping learning solution algorithm", "machine learning evolutionary algorithm", "enabling learning evolutionary algorithm"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"mapping learning evolutionary algorithm\") OR (\"modified multiobjective optimized algorithm\"))~".
• Removing quotes may allow a broader search: (( mapping learning evolutionary algorithm ) OR ( modified multiobjective optimized algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("mapping learning evolutionary algorithm") OR ("modified multiobjective optimized algorithm"))*.