Perhaps you should try some spelling variations:
"modified objective optimization algorithms" » "modified objective optimisation algorithm", "modified objective estimation algorithms", "modified objective estimation algorithm", "modified multiobjective optimization algorithms"
"modified deep evolutionary algorithm" » "modified deep evolution algorithm", "modified deep solution algorithm", "modified delphi evolutionary algorithm", "modified df evolutionary algorithm", "modified near evolutionary algorithm"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified deep evolutionary algorithm") OR ("modified objective optimization algorithms"))~.
• Removing quotes may allow a broader search: (( modified deep evolutionary algorithm ) or ( modified objective optimization algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified deep evolutionary algorithm") or ("modified objective optimization algorithms"))*.