Perhaps you should try some spelling variations:
chang ch'un » chang chen, chang chuan, chang hsun
boom chang » joon chang, woo chang
dang hadi » dang hai
war boom » gas boom
yang jie » yang jin, yang jui, yang xi
ying jin » yang jin, jing ji
yang yi » yang xi, yang jui

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: war boom chang ch'un chen ((((((yang jie) OR (ying jin))) OR (yang di))) OR (yang yi)) dang hadi ;~.
• Adding a wildcard symbol may retrieve word variants: war boom chang ch'un chen ((((((yang jie) or (ying jin))) or (yang di))) or (yang yi)) dang hadi ;*.