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