Perhaps you should try some spelling variations:
ghana china » china china, ghana ghana
china chang » chin chang, china zhang, china changqi
chang won » chang soon, chang ann, chang min
yan clan » yan guan
yan yuan » yan guan, fang yuan, nan yan
das clan » das bilan, das land, das cern
won hong » hong hong, kong hong, wang hong
hong yu » wong yue
wang » wing, wan

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

• Performing a fuzzy search may retrieve terms with similar spellings: (wang or lang) ((((yan clan) OR (yan yuan))) or (das clan)) ghana china chang won hong yu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (wang OR lang) ((((yan clan) OR (yan yuan))) OR (das clan)) ghana china chang won hong yu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang or lang) ((((yan clan) OR (yan yuan))) or (das clan)) ghana china chang won hong yu ;*".