Perhaps you should try some spelling variations:
"modified adaptive ventilation algorithms" » "modified adaptive estimation algorithms", "modified adaptive estimation algorithm", "modified adaptive convolution algorithms", "modified adaptive quantization algorithms", "modified invasive ventilation algorithms", "modified passive ventilation algorithms"
"modified notion optimized algorithm" » "modified notion optimized algorithms", "modified notion optimizer 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 notion optimized algorithm") OR ("modified adaptive ventilation algorithms"))~.
• Removing quotes may allow a broader search: (( modified notion optimized algorithm ) or ( modified adaptive ventilation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified notion optimized algorithm") or ("modified adaptive ventilation algorithms"))*.