Perhaps you should try some spelling variations:
formal communication » informal communication, oral communication, moral communication
separation among » separation using, starvation among, cooperation among
de developpement » sme development
developpement de » developpement des, developpement durable
des separation » ree separation, order separation, post separation
typology des » typologie des, typologie der, typology _
does formal » loss formal, does formality, des formalen
among does » among boys, among les, among donors

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

• Adding a wildcard symbol may retrieve word variants: typology des separation among does formal communication _ de developpement de l'afrique.*.