Perhaps you should try some spelling variations:
"attributes optimization algorithmssssss" » "attributes optimization algorithms", "attributes optimisation algorithm", "attribute optimization algorithmssssss", "attributes optimization algorithmsssssss", "attributes optimisation algorithmssssss", "attributes estimation algorithmssssss"
"parameters optimization algorithm" » "parameter optimization algorithm", "parameter estimation algorithm", "parameters optimization algorithms", "parameters optimisation algorithm", "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: (("attributes optimization algorithmssssss") or ("parameters optimization algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("attributes optimization algorithmssssss") OR ("parameters optimization algorithm")).
• Removing quotes may allow a broader search: (( attributes optimization algorithmssssss ) or ( parameters optimization algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("attributes optimization algorithmssssss") or ("parameters optimization algorithm"))*.