Perhaps you should try some spelling variations:
communication burundi » communication brunei, communication brands, telecommunication burundi
de communication » mobile communication, online communication
technologien vs » technologien des, technologien als, technologien ist
informal port » informal export, informal out, informal para
vs informal » _ informal, 3 informal
port duties » import duties, export duties, port dues
des afrique » en afrique, de l'afrique
duties de » duties set, duties _, duties 3

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

• Adding a wildcard symbol may retrieve word variants: technologien vs informal port duties de communication burundi _ developpement des afrique.*.