Perhaps you should try some spelling variations:
communication costo » communication costs, communication costa, communications costs
tests information » costs information, gets information, testing information
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
del developpement » de developpement, des developpements, le developpement
technology tests » technology thesis, technology best, technology costs
developpement et » developpement des, developpement de, development east
information dar » information der, information data, information due
et afrique » en afrique, l afrique
costo del » costa del, cose del, costo e
dar case » der case, our case, per case
case 6.2 » case 6.12, case f6.2, case 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology tests information dar case 6.2 communication costo del developpement et afrique.*.