Perhaps you should try some spelling variations:
lens china » loans china, leases china
china shen » china chen, china stein, china sea
chan kang » chung kang, chan fong, chan jan
chan eng » chan fong, chan ming, han en
yang tin » yang lin, yang jing, yang mind
yang jin » yang jie, yang jun, ying jin
hong yu » wong yue

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