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