Perhaps you should try some spelling variations:
zhang yan » zhang fan, zhang jian, wang yan
wang yang » wang yan, wang liang, wang yanling
zhang kim » zhang xin, kang kim, zhang i
song thin » song shin, song jin, song min
lang yan » wang yan, yang yang, lang lang
kim song » kim young, kim eung
yuan zi » yan zi, yuan fei, yuan hui
yuan li » yuan lin, guan li, dayuan li

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((lang yan) OR (zhang yan))) or (wang yang)) ((yuan zi) or (yuan li)) zhen zhang kim song thin ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((lang yan) OR (zhang yan))) OR (wang yang)) ((yuan zi) OR (yuan li)) zhen zhang kim song thin ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((lang yan) OR (zhang yan))) or (wang yang)) ((yuan zi) or (yuan li)) zhen zhang kim song thin ;*".