Perhaps you should try some spelling variations:
"united statute merchant marine" » "united statutes merchant marine", "united late merchant marine", "united mathie merchant marine", "united state merchant marine", "under statute merchant marine", "united stated merchant marine"
"united batten merchant marine" » "united between merchant marine", "united late merchant marine", "united watson merchant marine", "united nation merchant marine", "united after merchant marine", "united cattle 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.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("united statute merchant marine") OR ("united batten merchant marine"))) OR ("united states merchant marine")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"united statute merchant marine\") OR (\"united batten merchant marine\"))) or (\"united states merchant marine\"))".
• Removing quotes may allow a broader search: (((( united statute merchant marine ) OR ( united batten merchant marine ))) or ( united states merchant marine )).
• Adding a wildcard symbol may retrieve word variants: (((("united statute merchant marine") OR ("united batten merchant marine"))) or ("united states merchant marine"))*.