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 parameter optimized algorithms" » "modified parameter optimized algorithm", "modified parameter optimizer algorithms", "modified parameter optimization algorithms"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified adaptive ventilation algorithms") OR ("modified parameter optimized algorithms"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified adaptive ventilation algorithms\") OR (\"modified parameter optimized algorithms\"))".
• Removing quotes may allow a broader search: (( modified adaptive ventilation algorithms ) OR ( modified parameter optimized algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified adaptive ventilation algorithms") OR ("modified parameter optimized algorithms"))*.