Perhaps you should try some spelling variations:
csf administration » self administration, unis administration, union administration
trf administration » tariff administration, trade administration, self administration
2f administration » self administration, delf administration, seif administration
de colonies » des colonies, her colonies, les 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: %great britain %((((de colonies) OR (_ colonies))) OR (et colonies)) %((2f administration) OR (((trf administration) OR (csf administration))))%22.
• Adding a wildcard symbol may retrieve word variants: %great britain %((((de colonies) or (_ colonies))) or (et colonies)) %((2f administration) or (((trf administration) or (csf administration))))%22*.