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

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

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