Perhaps you should try some spelling variations:
imperial administration » internal administration, general administration, industrial administration
medical administration » financial administration
administration regime » administration review, administration reforms, administrative region
mines imperial » kings imperial, sizes imperial, chinese imperial
mines medical » eines medical, mine medical, mines medicinal
hon mines » iron mines, hon daines, when mines

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 mines imperial administration regime of china ) OR ( hon mines medical administration regime of china ))".
• Adding a wildcard symbol may retrieve word variants: (( hon mines imperial administration regime of china ) OR ( hon mines medical administration regime of china ))*.