Perhaps you should try some spelling variations:
"allocation optimization algorithmssss" » "allocation optimisation algorithm", "allocation optimisation algorithmsss", "allocation estimation algorithmssss", "allocation estimation algorithmsss"
"parameters optimization algorithms" » "parameter optimization algorithms", "parameter estimation algorithms", "parameters optimisation algorithm", "parameters estimation algorithms", "parameters estimation 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: (("parameters optimization algorithms") OR ("allocation optimization algorithmssss"))~.
• Removing quotes may allow a broader search: (( parameters optimization algorithms ) or ( allocation optimization algorithmssss ))~.
• Adding a wildcard symbol may retrieve word variants: (("parameters optimization algorithms") or ("allocation optimization algorithmssss"))*.