Perhaps you should try some spelling variations:
"modified multiobjective optimizer algorithms" » "modified multiobjective optimization algorithms", "modified multiobjective optimized algorithms", "modified multiobjective optimized algorithm"
"modified df solutions algorithm" » "modified df solution algorithm", "modified df evolution algorithm", "modified df evolutionary algorithm", "modified _ solutions algorithm", "modified up solutions algorithm", "modified _ solution algorithm", "modified adam solutions algorithm", "modified bi1 solutions 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 (\"modified df solutions algorithm\"))~".
• Removing quotes may allow a broader search: (( modified multiobjective optimizer algorithms ) OR ( modified df solutions algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified multiobjective optimizer algorithms") OR ("modified df solutions algorithm"))*.