Perhaps you should try some spelling variations:
britain administration » prison administration, clinton administration, insulin administration
mission administration » prison administration, son administration, medication administration
reagan administration » lean administration, en administration, against administration

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: ((reagan administration) OR (((britain administration) OR (mission administration)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((reagan administration) or (((britain administration) OR (mission administration))))".
• Adding a wildcard symbol may retrieve word variants: ((reagan administration) or (((britain administration) OR (mission administration))))*.