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