Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithm" » "modified multiobjective optimization algorithms", "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithm"
"modified qoe estimation algorithmss" » "modified qoe estimation algorithms", "modified qoe estimation algorithm", "modified qoe optimization algorithms", "modified pose estimation algorithmss", "modified _ estimation algorithmss", "modified cover estimations algorithmss", "modified male estimation algorithmss", "modified bi1 estimation 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 optimization algorithm") OR ("modified qoe estimation algorithmss"))~.
• Removing quotes may allow a broader search: (( modified multiobjective optimization algorithm ) or ( modified qoe estimation algorithmss ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified multiobjective optimization algorithm") or ("modified qoe estimation algorithmss"))*.