Perhaps you should try some spelling variations:
"certified network estimation algorithms" » "certified network estimation algorithm", "certified network optimization algorithms", "certified network optimisation algorithm", "verified network estimation algorithms"
"modified passive solution algorithm" » "modified passive evolution algorithm", "modified passive convolution algorithms", "modified passive evolutionary algorithm", "modified adaptive solution algorithm", "modified positive solutions algorithm", "modified saline solution 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 solution algorithm") or ("certified network estimation algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified passive solution algorithm") OR ("certified network estimation algorithms"))*.
• Removing quotes may allow a broader search: (( modified passive solution algorithm ) or ( certified network estimation algorithms ))*.