Perhaps you should try some spelling variations:
"lungs / diseases, destructive" » "lungs / disease, destructive", "lungs / diseases, destruction"
"lung / diseases, constructive" » "lung / disease, constructive", "lung / diseases, construction", "lung / diseases, constructing", "lung / diseases, constructions"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("lungs / diseases, destructive") OR ("lung / diseases, constructive")).
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