Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithm" » "modified multiobjective optimization algorithm"
"designed network estimation algorithmss" » "designed network estimation algorithms", "designed network optimization algorithms", "designed network optimization algorithmss", "defined network estimation algorithmss"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"designed network estimation algorithmss\") OR (\"modified multiobjective estimation algorithm\"))~".
• Removing quotes may allow a broader search: (( designed network estimation algorithmss ) OR ( modified multiobjective estimation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("designed network estimation algorithmss") OR ("modified multiobjective estimation algorithm"))*.