Perhaps you should try some spelling variations:
documentaries » documentation, documentary, commentaries
dokumentation » documentation
dokumentationen » documentationen, documentation, dokumentarischen
dokumentationsband » documentationsband
documentationen » documentation, documentations, documentationt

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((documentaries or dokumentation) or ((dokumentationen OR dokumentationsband) or documentationen))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((documentaries OR dokumentation) OR ((dokumentationen OR dokumentationsband) OR documentationen))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((documentaries or dokumentation) or ((dokumentationen OR dokumentationsband) or documentationen))*".