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