Perhaps you should try some spelling variations:
"munster volunteers corps" » "munster volunteer corps", "ulster volunteers corps", "manchester volunteers corps", "munster volunteers records", "munster volunteers cses", "munster volunteers more"
"ulster volunteer corps" » "ulster volunteers corps", "munster volunteer corps", "exeter volunteer corps"

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: (("ulster volunteer corps") OR ("munster volunteers corps")).
• Removing quotes may allow a broader search: (( ulster volunteer corps ) or ( munster volunteers corps )).
• Adding a wildcard symbol may retrieve word variants: (("ulster volunteer corps") or ("munster volunteers corps"))*.