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

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("parameters optimization algorithms") or ("attributes optimization algorithmssssss"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("parameters optimization algorithms") OR ("attributes optimization algorithmssssss")).
• Removing quotes may allow a broader search: (( parameters optimization algorithms ) or ( attributes optimization algorithmssssss )).
• Adding a wildcard symbol may retrieve word variants: (("parameters optimization algorithms") or ("attributes optimization algorithmssssss"))*.