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