Perhaps you should try some spelling variations:
"barry potter and the philosopher's stone" » "barry potter and the philosophers's stone", "barry potter and the philosophies's stone", "barry potter and the philosophy's stone"
"carry potter and the philosopher's stone" » "carry potter and the philosophers's stone", "carry potter and the philosophies's stone", "carry potter and the philosophy's stone"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("barry potter and the philosopher's stone") OR ("carry potter and the philosopher's stone"))~.
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