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