Perhaps you should try some spelling variations:
neutral point » neutral policy, neutral long, neutral zone
central zone » central one, central line, neutral zone
quan guan » gan guan, quan guo, yan guan
centre de » centre _, centrale des
guan a » juan a
wang » wing, wan
saur » sur, spur

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

• Performing a fuzzy search may retrieve terms with similar spellings: (wang or lang) quan guan a ((((central zone) or (centre de))) or (neutral point)) than one saur ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (wang OR lang) quan guan a ((((central zone) OR (centre de))) OR (neutral point)) than one saur ;.
• Adding a wildcard symbol may retrieve word variants: (wang or lang) quan guan a ((((central zone) or (centre de))) or (neutral point)) than one saur ;*.