Perhaps you should try some spelling variations:
"disaster volunteer corps" » "leicester volunteer corps", "leinster volunteer corps", "munster volunteer corps"
"ulster volunteers corps" » "ulster volunteers records", "ulster volunteers cses", "ulster volunteers more"

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: (("disaster volunteer corps") OR ("ulster volunteers corps"))*.
• Removing quotes may allow a broader search: (( disaster volunteer corps ) or ( ulster volunteers corps ))*.