Perhaps you should try some spelling variations:
de communication » mobile communication, online 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 de » trade die, rade de, trade date
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 de communication costs e developpement de afrique.*.