Perhaps you should try some spelling variations:
imperial administration » internal administration, general administration, industrial administration
medical administration » financial administration
man qing » han qing, wan qing, yan qing

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: "man qing ((imperial administration) OR (medical administration)) reforms of china".
• Adding a wildcard symbol may retrieve word variants: man qing ((imperial administration) OR (medical administration)) reforms of china*.