Perhaps you should try some spelling variations:
yihan guan » yan guan
yang liang » wang liang, yan liang, yang yang
yang jui » yang judy, yang di, yang yi
meng hai » dang hai, feng hui, hong hai
yang xi » yang di, yang yi
wang » wing, wan, lang
hyoung » young, hyong, kyoung

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 hyoung ((yihan guan) OR (yang liang)) daun ((yang jui) OR (yang xi)) meng hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang hyoung ((yihan guan) or (yang liang)) daun ((yang jui) OR (yang xi)) meng hai ;~".
• Adding a wildcard symbol may retrieve word variants: wang hyoung ((yihan guan) or (yang liang)) daun ((yang jui) OR (yang xi)) meng hai ;*.