Perhaps you should try some spelling variations:
yulan zhang » xiulan zhang, yan zhang, yuan chang
chen yulan » chen yugang, chen yulu, chen yun
zhang ming » zhang xin
wing yan » wang yan, wing ian, wing tan
ming shu » ming shih, cong shu, ming lu
dong di » dong sin
y un » y und, y sun, _ un
y en » y el, _ en, i en
hong » long
kong » long, pong, ong

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: ((((wing yan) OR (hong kong))) OR (dong di)) ((y un) OR (y en)) chen yulan zhang ming shu ;~.
• Adding a wildcard symbol may retrieve word variants: ((((wing yan) or (hong kong))) or (dong di)) ((y un) or (y en)) chen yulan zhang ming shu ;*.