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

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"allocation optimization algorithm\") OR (\"parameters estimation algorithmssssssssssss\"))~".
• Removing quotes may allow a broader search: (( allocation optimization algorithm ) OR ( parameters estimation algorithmssssssssssss ))~.
• Adding a wildcard symbol may retrieve word variants: (("allocation optimization algorithm") OR ("parameters estimation algorithmssssssssssss"))*.