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

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 choosing optimized algorithms\") OR (\"modified multiobjective optimization algorithm\"))~".
• Removing quotes may allow a broader search: (( modified choosing optimized algorithms ) OR ( modified multiobjective optimization algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified choosing optimized algorithms") OR ("modified multiobjective optimization algorithm"))*.