Perhaps you should try some spelling variations:
internal administration » imperial administration, intranasal administration, central administration
administration regime » administration review, administration reforms, administrative region
man qing » wan qing, yan qing, fan qing
han qing » zhang qing, wang 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) OR (han qing)) internal administration regime of china".
• Adding a wildcard symbol may retrieve word variants: ((man qing) OR (han qing)) internal administration regime of china*.