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