Perhaps you should try some spelling variations:
technology private » technology preface, technology rate, technology related
oral communication » personal communication
information need » information needs, information needed, information speed
de development » e development, ce development, de developpement
systems de » systemes de, systems der, systems die
a afrique » l afrique, en afrique
need de » need le, need fide, need one
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: technology private information need de oral communication systems de development a afrique.*.