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