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

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