Perhaps you should try some spelling variations:
personal communication » interpersonal communication
communication gross » communication cross, communication across, communications cross
trade development » software development
development des » development does, development desd, development ds
typologien die » typologien der, typologie des, typologie der
die variation » de variation, does variation, der variation
des personal » des personals, der personal, das personal
gross trade » goods trade, crops trade, growth trade
des afrique » en afrique, de l'afrique

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

• Adding a wildcard symbol may retrieve word variants: typologien die variation _ des personal communication gross trade development des afrique.*.