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