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