Perhaps you should try some spelling variations:
welfare administration » revenue administration
trf administration » csf administration, tariff administration, trade administration
2f administration » csf administration, 2.2 administration, 2.10 administration
22great britain » great britain, xgreat britain, zgreat britain
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: %22great britain %((2f colonies) OR (((et colonies) OR (_ colonies)))) %((((2f administration) OR (((self administration) OR (welfare administration))))) OR (trf administration))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22great britain %((2f colonies) or (((et colonies) or (_ colonies)))) %((((2f administration) or (((self administration) OR (welfare administration))))) or (trf administration))%22".
• Adding a wildcard symbol may retrieve word variants: %22great britain %((2f colonies) or (((et colonies) or (_ colonies)))) %((((2f administration) or (((self administration) OR (welfare administration))))) or (trf administration))%22*.