Perhaps you should try some spelling variations:
tropen communication » open communication, proper communication, spoken communication
des developpements » deux developpements, de developpement, et developpements
developpements en » developpement en, developpement et, developpements de
de variations » de variation, 1er variations, ier variations
typology de » typology _, typology 6, typology a
der tropen » den tropen, der treppen, der open
a des » a der, a das

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

• Adding a wildcard symbol may retrieve word variants: typology de variations _ der tropen communication a des developpements en afrique.*.