Perhaps you should try some spelling variations:
"modified allocation optimized algorithms" » "modified allocation optimization algorithms", "modified allocation optimizer algorithms", "modified allocation optimizer algorithmss"
"modified caging optimized algorithm" » "modified caging optimizer algorithms", "modified aging optimized algorithm", "modified changing optimized algorithm", "modified charging optimized algorithm"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("modified caging optimized algorithm") or ("modified allocation optimized algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified caging optimized algorithm") OR ("modified allocation optimized algorithms"))*.
• Removing quotes may allow a broader search: (( modified caging optimized algorithm ) or ( modified allocation optimized algorithms ))*.