Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithms" » "modified multiobjective optimization algorithms", "modified multiobjective estimation algorithm", "modified multiobjective optimisation algorithm"
"modified notion estimation algorithmsss" » "modified notion estimation algorithm", "modified notion estimation algorithmss", "modified notion optimization algorithmsss", "modified notion optimisation algorithmss", "modified motion estimation algorithmsss"

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 notion estimation algorithmsss") OR ("modified multiobjective estimation algorithms"))~.
• Removing quotes may allow a broader search: (( modified notion estimation algorithmsss ) or ( modified multiobjective estimation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified notion estimation algorithmsss") or ("modified multiobjective estimation algorithms"))*.