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

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