Perhaps you should try some spelling variations:
administration regime » administration review, administration reforms, administrative region
mines imperial » kings imperial, sizes imperial, chinese imperial
qing imperial » kings imperial, eng imperial, his imperial

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