Perhaps you should try some spelling variations:
xiaoyang tang » xiaoyan deng
den xiaoyang » deng xiaoping, shen xiaofang, tang xiaoyang
ching wen » ching kwan, ching fein, ching hea
chia wen » china won, asia wen
chia lan » china land, china law, chun lan
yang jin » yang jie, yang jun, ying jin
jin data » main data, own data, von data

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: den xiaoyang tang ((((chia wen) OR (chia lan))) OR (ching wen)) yang jin data (hai OR hari) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "den xiaoyang tang ((((chia wen) OR (chia lan))) or (ching wen)) yang jin data (hai or hari) ;~".
• Adding a wildcard symbol may retrieve word variants: den xiaoyang tang ((((chia wen) OR (chia lan))) or (ching wen)) yang jin data (hai or hari) ;*.