Perhaps you should try some spelling variations:
"modified adaptive ventilation algorithms" » "modified adaptive estimation algorithm", "modified adaptive convolution algorithms", "modified adaptive quantization algorithms", "modified invasive ventilation algorithms", "modified passive ventilation algorithms"
"modified quantile estimation algorithms" » "modified quantile estimation algorithm", "modified quantile optimization algorithms", "modified quantile optimisation 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 quantile estimation algorithms") or ("modified adaptive ventilation algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified quantile estimation algorithms") OR ("modified adaptive ventilation algorithms"))*.
• Removing quotes may allow a broader search: (( modified quantile estimation algorithms ) or ( modified adaptive ventilation algorithms ))*.