Perhaps you should try some spelling variations:
den reformen » der reformen, von reformen, die reformen
reformen a » reformen _, reformen 2, reformen 6
zhang den » zhang fan, zhang wei, zhang yan
zhang zhi » zhong zhi, wang zhi, zhang wei
zhong tai » hong tan, hong hai, zhong zhi
do zhang » ceo zhang, hao zhang, _ zhang
a davis » _ davis, m davis, a david

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: when do zhang den reformen a davis ((zhang zhi) OR (zhong tai)) ;~.
• Adding a wildcard symbol may retrieve word variants: when do zhang den reformen a davis ((zhang zhi) or (zhong tai)) ;*.