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