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

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified multiobjective optimisation algorithm\") OR (\"modified df optimisation algorithmssss\"))~".
• Removing quotes may allow a broader search: (( modified multiobjective optimisation algorithm ) OR ( modified df optimisation algorithmssss ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified multiobjective optimisation algorithm") OR ("modified df optimisation algorithmssss"))*.