Perhaps you should try some spelling variations:
african communications » africa communications, rica communications, optical communications
communications model » communications models, communication model, communicating model
dal developpement » de developpement, du developpement, au developpement
technology trade » technology trends, technology transfer, technology transfers
developpement en » developpement et, developpement des, developpement de
3 african » 32 african, _ african, 1 african
model dal » model data, model d, model dgm

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

• Adding a wildcard symbol may retrieve word variants: technology trade integration 3 3 african communications model dal developpement en afrique.*.