Perhaps you should try some spelling variations:
reformen der » formen der, reform der
david hong » david ng
liang wei » xiang wei, zhang wei, wang wei
der david » de david, dyker david, dror david
qian yan » qian jun, qian yi
liang li » ling li, qiang li, liang zhi
wan yan » wang yan, nan yan, wai yan

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