Perhaps you should try some spelling variations:
time communication » de communication, mobile communication, online communication
der developpement » de developpement, des developpements, leur developpement
developpement en » developpement et, developpement des, developpement de
technologies 2 » technologies _, technologies 4
table 4 » table _, table 1, table 4.1
4 time » 3 time
a der » _ der, 2 der, 3 der

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information table 4 time communication a der developpement en afrique.*.