Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
developpement en » developpement et, developpement des, developpement de
information due » information does, information der, information duties
4 developpement » de developpement, le developpement, et developpement
technologies 1 » technologies _, technologies 4, technologies 2
age data » wage data, cge data, image data
due age » due care, due date
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologies 1 information due age data communications costs 4 developpement en afrique.*.