Perhaps you should try some spelling variations:
social interaction » social interactions, social integration
2003 communication » 2.3 communication, 2011 communication, 26.3 communication
developpement et » developpement des, developpement de, development east
a developpement » au developpement, de developpement, le developpement
ecology social » economy social, technology social, ecology sociology
et afrique » en afrique, l afrique
from 2003 » from 2000, from 2001, from 2002
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: ecology social interaction effects from 2003 communication costs a developpement et afrique.*.