Perhaps you should try some spelling variations:
china rate » china state, china water, china rail
lens china » loans china, leases china
quang hong » quang cuong, wang hong, zhang hong
rate yang » rate band, path yang, rate can
yang hong » wang hong, yang hongli, zhang hong
chan eng » chan fong, chan kang, chan ming
han en » han men, van en, han shen

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