Perhaps you should try some spelling variations:
prasidenten von » prasidenten der
des prasidenten » des patienten
among actors » among doctors, among acholi, among donors
von among » even among
yang jin » yang jie, yang jun, shang jin
ying jin » jing ji, yang jie
wang » wing, wan, lang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang yan ((((yang jin) OR (ying jin))) or (zhang fan)) des prasidenten von among actors ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan ((((yang jin) OR (ying jin))) OR (zhang fan)) des prasidenten von among actors ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan ((((yang jin) OR (ying jin))) or (zhang fan)) des prasidenten von among actors ;*".