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

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: (("allocation optimization algorithms") OR ("parameter optimization algorithmssssssssss"))~.
• Removing quotes may allow a broader search: (( allocation optimization algorithms ) or ( parameter optimization algorithmssssssssss ))~.
• Adding a wildcard symbol may retrieve word variants: (("allocation optimization algorithms") or ("parameter optimization algorithmssssssssss"))*.