Perhaps you should try some spelling variations:
trf administration » csf administration, tariff administration, trade administration
2f administration » csf administration, self administration, delf administration
xgreat britain » great britain, zgreat britain, great britains
great brittain » great britain, great britian, great britain's
2f colonies » p colonies, 4 colonies, de colonies
et colonies » her colonies, des colonies, les colonies
_ colonies » _ colonial

Try widening your search to All Fields.

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: %((xgreat britain) OR (great brittain)) %((2f colonies) OR (((et colonies) OR (_ colonies)))) %((2f administration) OR (trf administration))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((xgreat britain) OR (great brittain)) %((2f colonies) or (((et colonies) or (_ colonies)))) %((2f administration) or (trf administration))%22".
• Adding a wildcard symbol may retrieve word variants: %((xgreat britain) OR (great brittain)) %((2f colonies) or (((et colonies) or (_ colonies)))) %((2f administration) or (trf administration))%22*.