Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
trade information » price information, private information, trade integration
information wages » information age, information wants, information war
technology trade » technology trends, technology transfer, technology transfers
4 communications » 14 communications, 4 communication, 2 communications
developpement de » developpement des, developpement durable
e developpement » de developpement, le developpement, et developpement
wages prices » wage price, gas prices, wages race
de afrique » de l'afrique, en afrique, l afrique
prices 4 » prices _, prices a, prices 3
costs e » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technology trade information wages prices 4 communications costs e developpement de afrique.*.