Perhaps you should try some spelling variations:
communication costly » communication costs, communication costa, communications costs
den communication » open communication, lean communication, when communication
town development » open development, human development, urban development
technology user » technology users, technology use, technology used
user innovation » der innovation, serie innovation, gender innovation
costly town » costly than
africa era » africa eiu, africa eu, africa en
die den » die der, die daten

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

• Adding a wildcard symbol may retrieve word variants: technology user innovation _ die den communication costly town development africa era.*.