Perhaps you should try some spelling variations:
information survey » information sources, information source, information series
oral communication » personal communication
des developpement » des developpements, de developpement, le developpement
technologies dis » technologies dans, technologies de, technologies bit
developpement du » developpement de, developpement des, developpement et
dis information » mis information, aids information, des informations
communication 3 » communication _, communication a
survey 11 » survey 1.1, survey 1, survey 2011
du africa » de africa, eu africa, 1 africa
11 oral » 11 coral, 11 moral, 1 oral
3 des » 3 der, 3 das, a des

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

• Adding a wildcard symbol may retrieve word variants: technologies dis information survey 11 oral communication 3 des developpement du africa.*.