Perhaps you should try some spelling variations:
"munster volunteer corps" » "leinster volunteer corps", "ulster volunteers corps", "disaster volunteer corps"
"ulster volunteer corps" » "ulster volunteers corps", "exeter volunteer corps", "disaster volunteer corps"

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