Perhaps you should try some spelling variations:
leur developpement » le developpement, deux developpements, de developpement
technologies math » technologies may, technologies a, technologies art
information einer » information eine, formation einer, information being
math information » catch information, much information, health information
developpement de » developpement des, developpement durable
de afrique » de l'afrique, en afrique, l afrique
einer 4 » einer _, einer 2
4 risk » 3 risk

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

• Adding a wildcard symbol may retrieve word variants: technologies math information einer 4 risk communication a leur developpement de afrique.*.