Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
iraq communications » iran communications, rural communications, chad communications
child interactions » machine interactions, chemical interactions
techniques child » techniques check, techniques aims, techniques avoid
developpement en » developpement et, developpement des, developpement de
interactions du » interactions de, interactions _, interactions 4
a developpement » au developpement, de developpement, le developpement
du datos » de datos, d datos, 1 datos
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: techniques child interactions du datos iraq communications costs a developpement en afrique.*.