Perhaps you should try some spelling variations:
"modified objective optimisation algorithm" » "modified objective optimization algorithm", "modified multiobjective optimization algorithm", "modified objective optimization algorithms", "modified objective estimation algorithm", "modified objective estimation algorithms"
"modified df optimisation algorithmssssssss" » "modified df optimization algorithmsssssssss", "modified df estimation algorithmssssssss", "modified df estimation algorithmsssssssss", "modified _ optimisation algorithmssssssss", "modified _ optimization algorithmssssssss", "modified qoe optimization algorithmssssssss", "modified adam optimisation algorithmssssssss", "modified bi1 optimisation algorithmssssssss"

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