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