Perhaps you should try some spelling variations:
joon chang » hoong chang, boon chong, jin chang
tang joon » tan soon
chang you » change you, change your, thing you
shang hai » shang kai, dang hai, chang ha
you when » you where, you what, you who
yang jun » yang jui, pang jun, yang jin
yang xi » yang jui
yang yi » 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: tang joon chang you when ((((((yang di) OR (yang xi))) OR (yang jun))) OR (yang yi)) shang hai ;~.
• Adding a wildcard symbol may retrieve word variants: tang joon chang you when ((((((yang di) or (yang xi))) or (yang jun))) or (yang yi)) shang hai ;*.