Perhaps you should try some spelling variations:
technologies based » technologies used, technology based, technologies a
information centre » information centers, information contents
based information » basic information, based innovation, land information
de communication » mobile communication, online communication
3.3 developing » 4 developing, 2 developing, 1 developing
developing em » developing e, developing eq, developing amp
centre de » centre _, centrale des
costs 3.3 » costs 2.3, costs 3.5, costs 4.3
em africa » 1 africa
de de » e de, de ce, de se

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

• Adding a wildcard symbol may retrieve word variants: technologies based information centre de de communication costs 3.3 developing em africa.*.