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

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: ((fragmentation OR dokumentation) OR (dokumentationen OR (documentations OR documentaries)))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((fragmentation or dokumentation) or (dokumentationen or (documentations OR documentaries)))~".
• Adding a wildcard symbol may retrieve word variants: ((fragmentation or dokumentation) or (dokumentationen or (documentations OR documentaries)))*.