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"

You may be able to get more results by adjusting your search query.

• 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"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"barry potter and the philosopher's stone\") OR (\"carry potter and the philosopher's stone\"))*".
• Removing quotes may allow a broader search: (( barry potter and the philosopher's stone ) OR ( carry potter and the philosopher's stone ))*.