Perhaps you should try some spelling variations:
cheng ming » cheng bing, cheng ling, chen ping
weng fang » jing fang, wen wang
chen wang » chen yang, chen rong, chen ping
john song » john wong, john bonn, john ngosong
ren weng » den weg
wan ren » wan wen, wan sern
shin » skin, sein, thin

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

• Performing a fuzzy search may retrieve terms with similar spellings: wan ren weng fang ((cheng ming) OR (chen wang)) john song shin ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan ren weng fang ((cheng ming) OR (chen wang)) john song shin ;*".