Perhaps you should try some spelling variations:
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You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("7th new worker volunteer infants regiment") OR ("7th new worker volunteer its regiment"))) OR ("7th new york volunteer infantry treatment")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"7th new worker volunteer infants regiment\") OR (\"7th new worker volunteer its regiment\"))) or (\"7th new york volunteer infantry treatment\"))".
• Removing quotes may allow a broader search: (((( 7th new worker volunteer infants regiment ) OR ( 7th new worker volunteer its regiment ))) or ( 7th new york volunteer infantry treatment )).
• Adding a wildcard symbol may retrieve word variants: (((("7th new worker volunteer infants regiment") OR ("7th new worker volunteer its regiment"))) or ("7th new york volunteer infantry treatment"))*.