Perhaps you should try some spelling variations:
"defined network optimization algorithm" » "defined network optimization algorithms", "defined network optimisation algorithm", "defined network estimation algorithm", "designed network optimization algorithm"
"modified adaptive optimized algorithms" » "modified adaptive optimized algorithm", "modified adaptive optimizer algorithms", "modified adaptive optimization algorithms", "modified passive optimized algorithms"

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 optimization algorithm") OR ("modified adaptive optimized algorithms"))~.
• Removing quotes may allow a broader search: (( defined network optimization algorithm ) or ( modified adaptive optimized algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("defined network optimization algorithm") or ("modified adaptive optimized algorithms"))*.