Perhaps you should try some spelling variations:
technologies energy » technologies general, technology energy, technologies any
oral communication » personal communication
information gaps » information gap
de development » e development, ce development, de developpement
a afrique » l afrique, en afrique
gaps de » gaps do, camps de, gaps new
de oral » de otras, new oral

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

• Adding a wildcard symbol may retrieve word variants: technologies energy information gaps de oral communication _ de development a afrique.*.