Perhaps you should try some spelling variations:
"united statute merchant marine" » "united statutes merchant marine", "united late merchant marine", "united batten merchant marine", "united state merchant marine", "under statute merchant marine", "united stated merchant marine"
"united states merchant marine" » "united statutes merchant marine", "united coates merchants marine", "united late merchant marine"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"united statute merchant marine\") OR (\"united states merchant marine\"))".
• Removing quotes may allow a broader search: (( united statute merchant marine ) OR ( united states merchant marine )).
• Adding a wildcard symbol may retrieve word variants: (("united statute merchant marine") OR ("united states merchant marine"))*.