Perhaps you should try some spelling variations:
"modified parameter estimation algorithm" » "modified parameter estimates algorithm", "modified parameter optimization algorithm"
"modified adaptive estimation algorithm" » "modified adaptive ventilation algorithm", "modified quantile estimation algorithm", "modified adaptive quantization algorithm", "modified passive estimation 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 adaptive estimation algorithm") OR ("modified parameter estimation algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified adaptive estimation algorithm\") OR (\"modified parameter estimation algorithm\"))*".
• Removing quotes may allow a broader search: (( modified adaptive estimation algorithm ) OR ( modified parameter estimation algorithm ))*.