Perhaps you should try some spelling variations:
special administration » social administration, imperial administration, penal administration
administration region » administration regime, administration regionale, administration regimens
hon keung » kin keung, man keung
hak keung » man keung

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((hon keung) OR (hak keung)) special administration region of china ) OR ( ((hon keung) OR (hak keung)) special administrative region of china )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((hon keung) OR (hak keung)) special administration region of china ) or ( ((hon keung) OR (hak keung)) special administrative region of china ))".
• Adding a wildcard symbol may retrieve word variants: (( ((hon keung) OR (hak keung)) special administration region of china ) or ( ((hon keung) OR (hak keung)) special administrative region of china ))*.