Perhaps you should try some spelling variations:
deng xiaoyang » deng xiaoping
tang xiaoyang » wang xiaochang, zhang xiaoyong, wang xiaodong
yang cindy » yang mind
cindy data » wind data, mind data
tang chun » wang chun, tung chung, kang chen
chun lan » chia lan, chun wai
lan yang » dan yang, tan yang, wang yang

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: ((deng xiaoyang) OR (tang xiaoyang)) tang chun lan yang cindy data (hai OR hari) ;~.
• Adding a wildcard symbol may retrieve word variants: ((deng xiaoyang) or (tang xiaoyang)) tang chun lan yang cindy data (hai or hari) ;*.