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"
"modified orca optimized algorithm" » "modified orca optimized algorithms", "modified orca optimizer algorithms", "modified dorca optimized algorithm", "modified orcad optimized algorithm", "modified ohca optimized 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 orca optimized algorithm") OR ("modified allocation optimization algorithms"))~.
• Removing quotes may allow a broader search: (( modified orca optimized algorithm ) or ( modified allocation optimization algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified orca optimized algorithm") or ("modified allocation optimization algorithms"))*.