Perhaps you should try some spelling variations:
"modified allocation optimization algorithm" » "modified allocation optimization algorithms", "modified allocation optimisation algorithm", "modified allocation estimation algorithm", "modified location optimization algorithm"
"modified quadratic estimation algorithmss" » "modified quadratic estimation algorithms", "modified quadratic estimation algorithm", "modified quadratic optimization algorithms", "modified quadratic optimization algorithmss", "modified quantile estimation algorithmss"

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 allocation optimization algorithm") OR ("modified quadratic estimation algorithmss"))~.
• Removing quotes may allow a broader search: (( modified allocation optimization algorithm ) or ( modified quadratic estimation algorithmss ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified allocation optimization algorithm") or ("modified quadratic estimation algorithmss"))*.