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