Perhaps you should try some spelling variations:
reform sahn » reform can, reform sarah, reform start
wei reform » der reform, i reform, ii reform
yan zhang » yuan chang, bin zhang, han chang
zhang wei » zhen wei
zhong tai » hong tan, zhong zhi
hong hai » shang hai, dang hai, hong tan
wan yan » wang yan, nan yan, wai yan

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

• Performing a fuzzy search may retrieve terms with similar spellings: wan yan zhang wei reform sahn david ((zhong tai) or (hong hai)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan yan zhang wei reform sahn david ((zhong tai) OR (hong hai)) ;*.