Perhaps you should try some spelling variations:
islamischer fundamentalismus » religioser fundamentalismus
fundamentalism » fundamentals, fundamentales, fundamental
fundamentalismus » fundamentalsus, fundamentalesus, fundamentalus

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: ((islamic fundamentalism) OR (islamischer fundamentalismus)).
• Adding a wildcard symbol may retrieve word variants: ((islamic fundamentalism) or (islamischer fundamentalismus))*.