Perhaps you should try some spelling variations:
"modified objective optimisation algorithmssss" » "modified objective optimisation algorithm", "modified objective optimization algorithms", "modified objective optimization algorithmssss", "modified multiobjective optimization algorithmssss"
"modified network optimization algorithm" » "modified network optimization algorithms", "modified network optimisation algorithm", "modified network estimation algorithm", "certified network optimization algorithm", "defined network optimization algorithm", "modified near optimization 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 network optimization algorithm") OR ("modified objective optimisation algorithmssss"))~.
• Removing quotes may allow a broader search: (( modified network optimization algorithm ) or ( modified objective optimisation algorithmssss ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified network optimization algorithm") or ("modified objective optimisation algorithmssss"))*.