Perhaps you should try some spelling variations:
zhang fang » zhang fan, zhang zhang, zhang yan
hai phong » bai chong, kai hong
yang yun » tang yun, yang yue, yang yang
yang jun » yang jui, pang jun, yang jin
ha phong » hua zhong, a hong, ha huong
yang yi » yang di, yang xi, yang jui
wang » wing, wan, lang

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: wang yan ((((yang yun) OR (yang jun))) OR (yang yi)) zhang fang ((ha phong) OR (hai phong)) shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan ((((yang yun) or (yang jun))) or (yang yi)) zhang fang ((ha phong) OR (hai phong)) shu ;~".
• Adding a wildcard symbol may retrieve word variants: wang yan ((((yang yun) or (yang jun))) or (yang yi)) zhang fang ((ha phong) OR (hai phong)) shu ;*.