Perhaps you should try some spelling variations:
"modified multiobjective optimizer algorithms" » "modified multiobjective optimization algorithms", "modified multiobjective optimized algorithms", "modified multiobjective optimized algorithm"
"core using method algorithm" » "core using mom algorithm", "core nursing methods algorithm", "core focusing method algorithm", "core using metal algorithm", "code using method algorithm", "care nursing method 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: (("core using method algorithm") OR ("modified multiobjective optimizer algorithms"))~.
• Removing quotes may allow a broader search: (( core using method algorithm ) or ( modified multiobjective optimizer algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("core using method algorithm") or ("modified multiobjective optimizer algorithms"))*.