Perhaps you should try some spelling variations:
lens china » loans china, leases china
chan kang » chung kang, chan eng, chan fong
china dan » china den, china data, china des
yang lin » yang jin, yang li, yang liang
wang lin » wang li, wang qin, wang limin
hong yu » wong yue
han en » han men, van en, chan eng

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((han en) or (chan kang)) lens china dan ((yang lin) OR (wang lin)) hong yu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((han en) OR (chan kang)) lens china dan ((yang lin) OR (wang lin)) hong yu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((han en) or (chan kang)) lens china dan ((yang lin) OR (wang lin)) hong yu ;*".