Perhaps you should try some spelling variations:
communication costly » communication costs, communication costa, communications costs
trade development » software development
de communication » mobile communication, online communication
technology der » technology does, technology 4ir, technology dlt
der innovation » gender innovation, 2 innovation, 3 innovation
innovation 1 » innovation _, innovation a
costly trade » costs trade, country trade, costly than
africa era » africa eiu, africa eu, africa en
vier de » vier des, ver de, eviter de
1 vier » _ vier, 3 vier

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

• Adding a wildcard symbol may retrieve word variants: technology der innovation 1 vier de communication costly trade development africa era.*.