Perhaps you should try some spelling variations:
verbal communication » nonverbal communication, virtual communication, oral communication
communication across » communication cross, communicating across, communication about
trade developpement » trade developement, trade development, de developpement
developpement en » developpement et, developpement des, developpement de
typologien der » typologie der, typologie des, apologien der
der variation » de variation, does variation, die variation
across trade » across grade, across track, gross trade

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

• Adding a wildcard symbol may retrieve word variants: typologien der variation _ etc verbal communication across trade developpement en afrique.*.