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

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