Perhaps you should try some spelling variations:
reform john » reformers john, reform japan, reform jason
wei reform » der reform, i reform, ii reform
john david » cohen david, sahn david, juan david
yan zhang » yuan chang, bin zhang, han chang
zhang wei » zhen wei
zhong tai » hong tan, hong hai, zhong zhi
hong ghi » zhong zhi, hong g, hong hai
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 john david ((zhong tai) or (hong ghi)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan yan zhang wei reform john david ((zhong tai) OR (hong ghi)) ;*.