Perhaps you should try some spelling variations:
cheng zhang » cheng han, zhen zhang, chen zheng
wang yong » wang yang, wang hyoung, wang yan
myung jae » chung jae, myung oak
jae yong » jae young, jae song, jim yong
yong shu » cong shu, tong shui, wong shiu
yang xi » yang di, yang yi, yang jui
gain » gains, main

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang yong) or (cheng zhang)) yang xi (rain OR gain) myung jae yong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang yong) OR (cheng zhang)) yang xi (rain OR gain) myung jae yong shu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang yong) or (cheng zhang)) yang xi (rain OR gain) myung jae yong shu ;*".