Perhaps you should try some spelling variations:
"allocation estimation algorithms" » "allocation optimization algorithms", "motion estimation algorithms", "allocation estimation algorithm", "allocation optimisation algorithm"
"parameters estimation algorithmssssssss" » "parameters estimation algorithmsssssss", "parameters optimization algorithmssssssss", "parameters optimisation algorithmsssssss", "parameter estimation algorithmssssssss", "parameter estimates algorithmssssssss", "parameter optimization algorithmssssssss"

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