Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithm" » "modified multiobjective optimization algorithms", "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithm"
"enabling learning evolution algorithm" » "enabling learning solution algorithm", "enabling learning evolutionary algorithm", "enabling learning convolution algorithms", "enabling learning convolution algorithm", "enabling learning emotion algorithm", "mapping learning evolution 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: "((\"modified multiobjective optimization algorithm\") OR (\"enabling learning evolution algorithm\"))~".
• Removing quotes may allow a broader search: (( modified multiobjective optimization algorithm ) OR ( enabling learning evolution algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified multiobjective optimization algorithm") OR ("enabling learning evolution algorithm"))*.