Perhaps you should try some spelling variations:
"designed network optimisation algorithm" » "designed network optimization algorithms", "designed network estimation algorithms", "designed network optimization algorithm", "defined network optimisation algorithm"
"modified parameter estimation algorithm" » "modified parameter estimates algorithm", "modified parameter optimization algorithm"

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 optimisation algorithm\") OR (\"modified parameter estimation algorithm\"))~".
• Removing quotes may allow a broader search: (( designed network optimisation algorithm ) OR ( modified parameter estimation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("designed network optimisation algorithm") OR ("modified parameter estimation algorithm"))*.