Perhaps you should try some spelling variations:
lens china » loans china, leases china
chan kang » chung kang, chan fong, chan ming
china ren » china loren, china real, china reza
chan eng » chan fong, chan ming, han en
chan jan » chain jane, chan alan, chan lau
ren yang » ren yan, chen yang, dan yang
yang kie » yang jie, yang di, yang xi
wong yue » wang yue, hong yu

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