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 user » technology users, technology use, technology used
user innovation » der innovation, serie innovation, gender innovation
innovation 1 » innovation _, innovation a
costly trade » costs trade, country trade, costly than
africa era » africa eiu, africa eu, africa en
rie de » vie de, crise de, marie de
1 rie » 1 rice, 1 ris, a rie

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

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