Perhaps you should try some spelling variations:
dong qian » gong qiang, ong kian, dong sin
lean how » learn how, clean how, mean how
yang min » yang mind, yang jin, kyung min
yang lin » yang jin, wang lin, yang li
tang min » chang min, sang minh, yang mind
yan how » plan how, mean how
hong yu » wong yue
best » west

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: dong qian ((yan how) OR (lean how)) best ((((yang min) OR (yang lin))) OR (tang min)) hong yu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong qian ((yan how) OR (lean how)) best ((((yang min) or (yang lin))) or (tang min)) hong yu ;~".
• Adding a wildcard symbol may retrieve word variants: dong qian ((yan how) OR (lean how)) best ((((yang min) or (yang lin))) or (tang min)) hong yu ;*.