Perhaps you should try some spelling variations:
"notion optimisation algorithmssssssssssssssssss" » "notion optimization algorithmsssssssssssssssssss", "notion estimation algorithmssssssssssssssssss", "notion estimation algorithmsssssssssssssssssss", "network optimization algorithmssssssssssssssssss"
"parameter optimisation algorithm" » "parameter optimization algorithms", "parameter estimation algorithm", "parameter estimation algorithms", "parameter optimization algorithm"

You may be able to get more results by adjusting your search query.

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