Perhaps you should try some spelling variations:
reformen von » formen von, referaten von, reformen _
reformen der » formen der, reform der
reform von » form von
david hong » david ng
wang wang » wang yang, wang liang, wang yan
hong than » hong tan, long thanh, hong hai
wan wang » wen wang, yan wang, wang yang
wang wei » zhang wei, wang zhi

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 wang wang wei ((((reformen von) OR (reformen der))) OR (reform von)) david hong than ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan wang wang wei ((((reformen von) OR (reformen der))) or (reform von)) david hong than ;~".
• Adding a wildcard symbol may retrieve word variants: wan wang wang wei ((((reformen von) OR (reformen der))) or (reform von)) david hong than ;*.