Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithm" » "modified multiobjective optimization algorithm"
"modified qoe optimization algorithmss" » "modified qoe optimization algorithms", "modified qoe optimisation algorithm", "modified qoe estimation algorithms", "modified game optimization algorithmss", "modified _ optimization algorithmss", "modified stage optimization algorithmss", "modified male optimization algorithmss", "modified bi1 optimization algorithmss"

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 multiobjective estimation algorithm") OR ("modified qoe optimization algorithmss"))~.
• Removing quotes may allow a broader search: (( modified multiobjective estimation algorithm ) or ( modified qoe optimization algorithmss ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified multiobjective estimation algorithm") or ("modified qoe optimization algorithmss"))*.