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