Perhaps you should try some spelling variations:
technology computer » technology computers, ethnology computer, technology chapter
de communication » mobile communication, online communication
du developpement » de developpement, le developpement, et developpement
developpement en » developpement et, developpement des, developpement de
computer usage » computer use, computer users
usage rate » usage state, wage rate, usage data
rate caps » rate swaps
costs du » costs _, costs 4, costs a
caps de » camps de, cap de, champs de

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

• Adding a wildcard symbol may retrieve word variants: technology computer usage rate caps de communication costs du developpement en afrique.*.