Perhaps you should try some spelling variations:
des prasidenten » des patienten
prasidenten von » prasidenten der
among actors » among doctors, among donors
among acholi » among schools, among school
yang jin » yang jie, yang jun, ying jin
wan yan » wang yan, nan yan, wai yan

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

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