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