Perhaps you should try some spelling variations:
technology sectoral » technology sector, technology neutral, technology social
under communication » jander communication, modern communication, de communication
sectoral variation » seasonal variation, temporal variation, temporal variations
developpement du » developpement de, developpement des, developpement et
variation avant » variation von, variation among, variation aware
4 developpement » de developpement, le developpement, et developpement
du afrique » en afrique, l afrique, de l'afrique
avant 4 » avant la, avant de, avant ia
4 under » 24 under, 4.4 under, 10 under
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: technology sectoral variation avant 4 under communication costs 4 developpement du afrique.*.