Perhaps you should try some spelling variations:
lens china » loans china, leases china
chan kang » chung kang, chan fong, chan jan
chen yang » chen rong
chan eng » chan fong, chan ming, han en
ren yang » ren yan, dan yang, pei yang
tin wang » ping wang, qian wang, tin hong
wang yue » wong yue, wang hua, wang yan

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: ((chan eng) OR (chan kang)) lens china ((ren yang) OR (chen yang)) tin wang yue ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((chan eng) or (chan kang)) lens china ((ren yang) OR (chen yang)) tin wang yue ;~".
• Adding a wildcard symbol may retrieve word variants: ((chan eng) or (chan kang)) lens china ((ren yang) OR (chen yang)) tin wang yue ;*.