Perhaps you should try some spelling variations:
"modified allocation optimized algorithms" » "modified allocation optimization algorithms", "modified allocation optimized algorithm", "modified allocation optimizer algorithms"
"modified aging solution algorithm" » "modified aging evolution algorithm", "modified aging convolution algorithms", "modified aging evolutionary algorithm", "modified caging solution algorithm", "modified saline solution algorithm"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified aging solution algorithm") OR ("modified allocation optimized algorithms"))~.
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