Perhaps you should try some spelling variations:
cell communication » cell communications, oral communication, verbal communication
era developpement » et developpement, en developpement, leur developpement
developpement en » developpement et, developpement des, developpement de
variation using » variations during, variation und, variation among
des variation » does variation, de variation, der variation
typology des » typologie des, typologie der, typology _
media era » media a, media art
using es » using aes, using e, using 5s
es cell » es cells, does cell, test cell

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

• Adding a wildcard symbol may retrieve word variants: typology des variation using es cell communication media era developpement en afrique.*.