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