Perhaps you should try some spelling variations:
trade information » price information, private information, trade integration
3.2 communication » 3 communication, 2.3 communication, de communication
technology trade » technology trends, technology transfer, technology transfers
developpement de » developpement des, developpement durable
information 2 » information 3
de afrique » de l'afrique, en afrique, l afrique
space 3.2 » space 2.1
2 space » 1 space, 3 space, 2.2 space

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

• Adding a wildcard symbol may retrieve word variants: technology trade information 2 space 3.2 communication costs _ developpement de afrique.*.