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