Perhaps you should try some spelling variations:
chang hsun » chang ch'un, chung hsuan, chang su
song byung » song bing, song yun, sung myung
wang ying » wang yang, wang yong, wang jing
chang yun » chong yun, chae yun, chang ann
song yang » dong yang, wang yang, yang yang
eang hay » dang hai, kang han

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: wang ying ((chang yun) OR (chang hsun)) ((song yang) OR (song byung)) judy eang hay ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ying ((chang yun) OR (chang hsun)) ((song yang) or (song byung)) judy eang hay ;~".
• Adding a wildcard symbol may retrieve word variants: wang ying ((chang yun) OR (chang hsun)) ((song yang) or (song byung)) judy eang hay ;*.