Perhaps you should try some spelling variations:
oral communication » personal communication
technologies co » technologies _, technologies 4, technologies 2
development aid » development a, development africa, development agenda
co information » do information, 2 information, 1 information
information 1 » information 2, information 3, information 3.2
de oral » de otras, new oral
1 de » 1 die, 1 der, _ de

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

• Adding a wildcard symbol may retrieve word variants: technologies co information 1 de oral communication costs _ development aid afrique.*.