Perhaps you should try some spelling variations:
communication costly » communication costs, communication costa, communications costs
2.2 communication » 2.3 communication, 3.2 communication, 2.7 communication
trade development » software development
information what » information war, information when, information wants
des information » des informations, does information, dis information
development lid » development led, development li, development lie
technology des » technology does, technology debts, technology nodes
costly trade » costs trade, country trade, costly than
lid afrique » l afrique
can 2.2 » can 5.2, gan 2.2, canon 2.2

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

• Adding a wildcard symbol may retrieve word variants: technology des information what can 2.2 communication costly trade development lid afrique.*.