Perhaps you should try some spelling variations:
verbal communication » nonverbal communication, virtual communication, oral communication
das developpement » des developpements, de developpement, du developpement
separation among » separation using, starvation among, cooperation among
developpement la » developpement de, developpement et, developpement du
ree separation » rate separation, grade separation, order separation
typology ree » typology from, typology _, typology 4.1
la afrique » l afrique, la fabrique, en afrique
media das » media data, medien das, medium das

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

• Adding a wildcard symbol may retrieve word variants: typology ree separation among boys verbal communication media das developpement la afrique.*.