Perhaps you should try some spelling variations:
trade information » price information, private information, trade integration
2.5 communication » 2.3 communication, 2.7 communication, 3.5 communication
technology trade » technology trends, technology transfer, technology transfers
information when » information what, information war, information wants
du developpement » de developpement, le developpement, et developpement
developpement en » developpement et, developpement des, developpement de
when gap » when cap, when goal, when a
costs du » costs _, costs 4, costs a
gap 2.5 » gap 2.3

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

• Adding a wildcard symbol may retrieve word variants: technology trade information when gap 2.5 communication costs du developpement en afrique.*.