Perhaps you should try some spelling variations:
transfer factors » transfer factor, transfer across, transfer functions
de communication » mobile communication, online communication
developpement de » developpement des, developpement durable
e developpement » de developpement, le developpement, et developpement
factors states » factors spatio, factory gates, factors obstacles
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 factors states trade de communication costs e developpement de afrique.*.