Perhaps you should try some spelling variations:
wang liang » wang yang
wang yuhan » wang luhang, wang yan, wang yidan
seok jeong » seok hong
gang yang » wang yang, yang yang, huang yang
kim song » kim young, kim eung
ping ku » ping ke, ping yu
ku gang » xu gang, yu gang, zum gang

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 liang) OR (wang yuhan)) ping ku gang yang ((seok jeong) OR (kim song)) hai ;~.
• Adding a wildcard symbol may retrieve word variants: ((wang liang) or (wang yuhan)) ping ku gang yang ((seok jeong) or (kim song)) hai ;*.