Perhaps you should try some spelling variations:
"modified allocation optimization algorithms" » "modified allocation optimisation algorithm", "modified allocation estimation algorithms", "modified allocation estimation algorithm", "modified location optimization algorithms"
"model using methods algorithm" » "model nursing methods algorithm", "model making methods algorithm", "model counting methods algorithm", "code using methods algorithm", "models nursing methods algorithm", "powder using methods 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 allocation optimization algorithms") OR ("model using methods algorithm"))~.
• Removing quotes may allow a broader search: (( modified allocation optimization algorithms ) or ( model using methods algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified allocation optimization algorithms") or ("model using methods algorithm"))*.