Perhaps you should try some spelling variations:
worker volunteer » workers volunteers, brother volunteer, coerced volunteer
infants regiment » infantry regiment, infants treatment, its regiment
words volunteer » edwards volunteer, does volunteer, form volunteer

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 ((worker volunteer) OR (words volunteer)) infants regiment".
• Adding a wildcard symbol may retrieve word variants: 7th new ((worker volunteer) OR (words volunteer)) infants regiment*.