Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithm" » "modified multiobjective optimization algorithm"
"modified qoe estimation algorithmss" » "modified qoe estimation algorithms", "modified qoe optimization algorithms", "modified pose estimation algorithmss", "modified _ estimation algorithmss", "modified cover estimations algorithmss", "modified male estimation algorithmss", "modified bi1 estimation algorithmss"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified qoe estimation algorithmss") or ("modified multiobjective estimation algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified qoe estimation algorithmss") OR ("modified multiobjective estimation algorithm")).
• Removing quotes may allow a broader search: (( modified qoe estimation algorithmss ) or ( modified multiobjective estimation algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified qoe estimation algorithmss") or ("modified multiobjective estimation algorithm"))*.