Perhaps you should try some spelling variations:
wang zheng » tang zheng, wang zhenpo, fang sheng
zheng hans » cheng han
liang ying » liang liying, huang ying, zhang ying
zhang ting » zhang ming, zhang jing, zhang ping
kong saur » kong sar, kong siu, wong sau
kong your » kong young, knowing your
hans von » hans van

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang zheng hans von welt ((liang ying) or (zhang ting)) ((kong saur) OR (kong your)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang zheng hans von welt ((liang ying) OR (zhang ting)) ((kong saur) OR (kong your)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang zheng hans von welt ((liang ying) or (zhang ting)) ((kong saur) OR (kong your)) ;*".