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

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified parameter optimization algorithm") OR ("defined network optimization algorithmssss"))~.
• Removing quotes may allow a broader search: (( modified parameter optimization algorithm ) or ( defined network optimization algorithmssss ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified parameter optimization algorithm") or ("defined network optimization algorithmssss"))*.