Perhaps you should try some spelling variations:
5.1 communication » 4.1 communication, 1.1 communication, 3.1 communication
developpement la » developpement de, developpement et, developpement du
der information » insider information, sector information, labor information
4 developpement » de developpement, le developpement, et developpement
technology der » technology does, technology 4ir, technology dlt
information 3 » information 2
practice 5.1 » practice 4.1, practice 1, practice 4
3 practice » 3 practices, 1 practice, 2 practice
la afrique » l afrique, la fabrique, en afrique
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology der information 3 practice 5.1 communication costs 4 developpement la afrique.*.