Perhaps you should try some spelling variations:
"attributes optimization algorithm" » "attribute optimization algorithm", "attributes optimization algorithms", "attributes optimisation algorithm", "attributes estimation algorithm"
"parameter optimization algorithmssssssssss" » "parameter optimization algorithmsssssssssss", "parameter optimisation algorithmssssssssss", "parameter estimation algorithmssssssssss", "parameters optimization 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 ("parameter optimization algorithmssssssssss"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"attributes optimization algorithm\") OR (\"parameter optimization algorithmssssssssss\"))".
• Removing quotes may allow a broader search: (( attributes optimization algorithm ) OR ( parameter optimization algorithmssssssssss )).
• Adding a wildcard symbol may retrieve word variants: (("attributes optimization algorithm") OR ("parameter optimization algorithmssssssssss"))*.