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