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

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: (("parameter optimization algorithm") or ("attribute optimization algorithmssssssssss"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("parameter optimization algorithm") OR ("attribute optimization algorithmssssssssss")).
• Removing quotes may allow a broader search: (( parameter optimization algorithm ) or ( attribute optimization algorithmssssssssss )).
• Adding a wildcard symbol may retrieve word variants: (("parameter optimization algorithm") or ("attribute optimization algorithmssssssssss"))*.