Perhaps you should try some spelling variations:
kong chang » kong hang, hoong chang, kong china
wang yuhan » wang luhang, wang yidan, fang yuan
chang chen » chang ch'un, chang chuan, change when
chen zhang » cheng zhang, zhen zhang, chen zheng
wang yuan » fang yuan, wang xuan, wang yidan
zhang bin » zhang xin, zhang jin, zhang lin
bin dann » sein dann, bin da, ein dank
dann hai » dang hai, dann hat, dann kam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((wang yuan) or (wang yuhan))) or (wang yan)) kong chang chen zhang bin dann hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((wang yuan) OR (wang yuhan))) OR (wang yan)) kong chang chen zhang bin dann hai ;.
• Adding a wildcard symbol may retrieve word variants: ((((wang yuan) or (wang yuhan))) or (wang yan)) kong chang chen zhang bin dann hai ;*.