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