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