Perhaps you should try some spelling variations:
zhang wei » zhen wei
yan fang » yin fang, yang yang, yan liang
yan wang » yuan wang, yang yang, qian wang
wei wang » wei yang, wen wang, wei shang
wang sun » wang jun, wing sun, gang sung
a china » 2 china, 3 china, era china
1 china » 2 china, 3 china
4 china » 2 china

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((yan fang) OR (yan wang)) ((((a china) or (1 china))) or (4 china)) zhang wei wang sun ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yan fang) OR (yan wang)) ((((a china) OR (1 china))) OR (4 china)) zhang wei wang sun ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yan fang) OR (yan wang)) ((((a china) or (1 china))) or (4 china)) zhang wei wang sun ;*".