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