Perhaps you should try some spelling variations:
chung kang » chung kay, chung tong
lens china » loans china, leases china
chan kang » chan eng, chan fong, chan jan
china tan » china top, china two, china taiwan
tan yang » dan yang, tan ying, tan yong
yang tin » yang jin, yang lin, yang jing
tin hong » tan hong, kia hong, thi hong
hong yu » wong yue

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((chan kang) or (chung kang)) lens china tan yang tin hong yu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((chan kang) OR (chung kang)) lens china tan yang tin hong yu ;*.