Perhaps you should try some spelling variations:
"certified network optimization algorithm" » "certified network optimization algorithms", "certified network optimisation algorithm", "certified network estimation algorithm", "verified network optimization algorithm"
"modified passive evolutionary algorithm" » "modified passive evolution algorithm", "modified passive solution algorithm", "modified adaptive evolutionary algorithm"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified passive evolutionary algorithm") or ("certified network optimization algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified passive evolutionary algorithm") OR ("certified network optimization algorithm"))*.
• Removing quotes may allow a broader search: (( modified passive evolutionary algorithm ) or ( certified network optimization algorithm ))*.