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

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

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