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

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