Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
technology center » technology centers, technology centered, technology centres
developpement de » developpement des, developpement durable
a developpement » au developpement, de developpement, le developpement
center nation » century nation, central nation, einer nation
nation rates » nation states, nation notes, nation race
rates rates » rates notes
rates data » rate data, states data, cases data
de afrique » de l'afrique, en afrique, l afrique
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technology center nation rates rates data communications costs a developpement de afrique.*.