Perhaps you should try some spelling variations:
"allocation optimisation algorithm" » "allocation optimization algorithm", "allocation optimization algorithms", "allocation estimation algorithm", "allocation estimation algorithms"
"parameter optimisation algorithmssssssssss" » "parameter optimization algorithmsssssssssss", "parameter estimation algorithmssssssssss", "parameter estimation algorithmsssssssssss", "parameter optimization algorithmssssssssss"

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

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