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

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("designed network optimization algorithms") or ("modified parameter optimization algorithmss"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("designed network optimization algorithms") OR ("modified parameter optimization algorithmss")).
• Removing quotes may allow a broader search: (( designed network optimization algorithms ) or ( modified parameter optimization algorithmss )).
• Adding a wildcard symbol may retrieve word variants: (("designed network optimization algorithms") or ("modified parameter optimization algorithmss"))*.