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

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified objective optimization algorithm") or ("modified response optimization algorithmss"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified objective optimization algorithm") OR ("modified response optimization algorithmss")).
• Removing quotes may allow a broader search: (( modified objective optimization algorithm ) or ( modified response optimization algorithmss )).
• Adding a wildcard symbol may retrieve word variants: (("modified objective optimization algorithm") or ("modified response optimization algorithmss"))*.