Perhaps you should try some spelling variations:
communication costly » communication costs, communication costa, communications costs
about information » account information, labor information, about inflation
trade development » software development
technology about » technology albert, technology south, technology act
information fais » information fake, information unfair, information flows
costly trade » costs trade, country trade, costly than
fais des » basis des, faire des, dans des
des risk » does risk, lens risk, nets risk

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

• Adding a wildcard symbol may retrieve word variants: technology about information fais des risk communication costly trade development _ afrique.*.