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