Perhaps you should try some spelling variations:
mock volunteers » among volunteers, local volunteers, how volunteers
its regiment » his regiment, 9th regiment, ist regiment
das regiment » a regiment, his regiment, das regime
new mock » new monk, view mock, new mode

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: "7th new mock volunteers ((its regiment) OR (das regiment))".
• Adding a wildcard symbol may retrieve word variants: 7th new mock volunteers ((its regiment) OR (das regiment))*.