Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, yang yang
dong yan » dong nan, wang yan, dong sin
yan yuan » fang yuan, nan yan, yan clan
das cern » das ferne, das clan
yan guan » gan guan, yang guang, yihan guan
out test » out west, about test, root test
wang out » hang out, wang hua, wang hui
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: ((dong yan) OR (dong yang)) wang out test ((yan guan) or (((yan yuan) or (das cern)))) hong yu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong yan) OR (dong yang)) wang out test ((yan guan) OR (((yan yuan) OR (das cern)))) hong yu ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong yan) OR (dong yang)) wang out test ((yan guan) or (((yan yuan) or (das cern)))) hong yu ;".
• Adding a wildcard symbol may retrieve word variants: ((dong yan) OR (dong yang)) wang out test ((yan guan) or (((yan yuan) or (das cern)))) hong yu ;*.