Perhaps you should try some spelling variations:
reformen beim » reformen bei, reformen im, reformen teil
tan reformen » von reformen, den reformen, can reforming
beim david » kim david
liang tan » liang dan, liang sun, wing tan
qian yan » qian jun, qian yi
nan yan » nan ya, wang yan, dan yang
hong ng » hong kong, hong jong, hong hong

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: ((nan yan) OR (qian yan)) liang tan reformen beim david ((hong w) OR (hong ng)) ;~.
• Adding a wildcard symbol may retrieve word variants: ((nan yan) or (qian yan)) liang tan reformen beim david ((hong w) or (hong ng)) ;*.