Perhaps you should try some spelling variations:
personal communication » interpersonal communication
communication gross » communication cross, communication across, communications cross
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
des personal » des personals, der personal, das personal
variation 1 » variations 1, variation _, variation 6
gross trade » goods trade, crops trade, growth trade
1 des » 1 das, 1 der, a des

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

• Adding a wildcard symbol may retrieve word variants: typologien der variation 1 des personal communication gross trade developpement en afrique.*.