Perhaps you should try some spelling variations:
"designed network optimization algorithms" » "designed network optimisation algorithm", "designed network estimation algorithms", "designed network estimation algorithm", "defined network optimization algorithms"
"modified parameters estimation algorithmss" » "modified parameters estimation algorithms", "modified parameters estimation algorithm", "modified parameter estimation algorithmss", "modified parameter estimates algorithmss", "modified parameter optimization 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 optimization algorithms\") OR (\"modified parameters estimation algorithmss\"))~".
• Removing quotes may allow a broader search: (( designed network optimization algorithms ) OR ( modified parameters estimation algorithmss ))~.
• Adding a wildcard symbol may retrieve word variants: (("designed network optimization algorithms") OR ("modified parameters estimation algorithmss"))*.