Perhaps you should try some spelling variations:
3.2 communication » 3 communication, 2.3 communication, de communication
developpement de » developpement des, developpement durable
transfer factor » transfer factors, transfer function, transfer history
e developpement » de developpement, le developpement, et developpement
factor states » factor shares, factor notes, factor scores
states trade » states state, states three
de afrique » de l'afrique, en afrique, l afrique
trade 3.2 » trade 2.2, trade 2, trade 4.1
costs e » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technology transfer factor states trade 3.2 communication costs e developpement de afrique.*.