Perhaps you should try some spelling variations:
"attributes optimization algorithm" » "attribute optimization algorithm", "attributes optimization algorithms", "attributes optimisation algorithm", "attributes estimation algorithm"
"parameters optimization algorithmssssssssss" » "parameter optimization algorithmssssssssss", "parameter estimation algorithmssssssssss", "parameters optimization algorithmsssssssssss", "parameters optimisation algorithmssssssssss", "parameters estimation algorithmssssssssss"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("attributes optimization algorithm") OR ("parameters optimization algorithmssssssssss"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"attributes optimization algorithm\") OR (\"parameters optimization algorithmssssssssss\"))".
• Removing quotes may allow a broader search: (( attributes optimization algorithm ) OR ( parameters optimization algorithmssssssssss )).
• Adding a wildcard symbol may retrieve word variants: (("attributes optimization algorithm") OR ("parameters optimization algorithmssssssssss"))*.