Perhaps you should try some spelling variations:
reformen jan » reformen a, reformen nach, reformen der
reformen von » formen von, reform von, referaten von
hong ghi » zhong zhi, hong g
hong hai » shang hai, zhong tai, dang hai
wan you » want you, warn you, can you
you han » you can, you had, you have
han wei » zhan wei, ha wei, han fei

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wan you han wei ((reformen jan) OR (reformen von)) david ((hong ghi) OR (hong hai)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan you han wei ((reformen jan) OR (reformen von)) david ((hong ghi) or (hong hai)) ;~".
• Adding a wildcard symbol may retrieve word variants: wan you han wei ((reformen jan) OR (reformen von)) david ((hong ghi) or (hong hai)) ;*.