Perhaps you should try some spelling variations:
communication modes » communication model, communication des, communication media
oral communication » personal communication
technologies ser » technologies series, technologies sector, technologies _
ser information » user information, der information, users information
de development » e development, ce development, de developpement
a afrique » l afrique, en afrique
modes de » mondes de, mode de, modeles de
de oral » de otras, new oral
gap de » gap die, cap de, gap d

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

• Adding a wildcard symbol may retrieve word variants: technologies ser information gap de oral communication modes de development a afrique.*.