Perhaps you should try some spelling variations:
information constraint » information constraints, informational constraints, information content
oecd communications » speed communications, cell communications, chad communications
communications cost » communications costs, communications cross, communication costs
developing cpia » developing china, developing asia, developing cil
technologies 2 » technologies _, technologies 4
5.4 developing » 6.4 developing, 3.3 developing, 2.2 developing
cost 5.4 » costs 5.4, cost 2.4, cost 3.4

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information constraint _ oecd communications cost 5.4 developing cpia africa.*.