Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithm" » "modified multiobjective optimization algorithm"
"modified aging optimizer algorithms" » "modified aging optimized algorithms", "modified aging optimized algorithm", "modified aging optimization algorithms", "modified caging optimizer algorithms"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified aging optimizer algorithms") OR ("modified multiobjective estimation algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified aging optimizer algorithms\") OR (\"modified multiobjective estimation algorithm\"))".
• Removing quotes may allow a broader search: (( modified aging optimizer algorithms ) OR ( modified multiobjective estimation algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified aging optimizer algorithms") OR ("modified multiobjective estimation algorithm"))*.