Perhaps you should try some spelling variations:
"modified effect optimization algorithms" » "modified effect optimisation algorithm", "modified effect estimation algorithms", "modified effect estimation algorithm", "modified effect optimisation algorithms", "modified effect estimation algorithmss", "modified effects optimization algorithms"
"modified objective optimization algorithm" » "modified multiobjective optimization algorithm", "modified objective optimisation algorithm", "modified objective estimation algorithm", "modified objective estimation algorithms"

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 effect optimization algorithms") OR ("modified objective optimization algorithm"))~.
• Removing quotes may allow a broader search: (( modified effect optimization algorithms ) or ( modified objective optimization algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified effect optimization algorithms") or ("modified objective optimization algorithm"))*.