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