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