Perhaps you should try some spelling variations:
imperial administration » internal administration, general administration, industrial administration
medical administration » financial administration
hon kong » hong kong, hon keung, kong kong

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "hon kong ((imperial administration) OR (medical administration)) regime of china".
• Adding a wildcard symbol may retrieve word variants: hon kong ((imperial administration) OR (medical administration)) regime of china*.