Perhaps you should try some spelling variations:
verbal communication » nonverbal communication, virtual communication, oral communication
communication across » communication cross, communicating across, communication about
de developpement » sme development
des variations » les variations, does variation, its variations
des afrique » en afrique, de l'afrique
ex verbal » des verbal, _ verbal, 3 verbal
across de » across new, across age, across key
typologie » typologies, typology

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

• Adding a wildcard symbol may retrieve word variants: typologie des variations _ ex verbal communication across de developpement des afrique.*.