Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
4.1 communications » 4.1 communication, 3.1 communications, 4.1 communicating
information rules » information bundles, information tussles, information tables
developpement de » developpement des, developpement durable
technology 1 » technology _
de afrique » de l'afrique, en afrique, l afrique
trade 4.1 » trade 2.2, trade 3.2

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

• Adding a wildcard symbol may retrieve word variants: technology 1 information rules trade 4.1 communications costs _ developpement de afrique.*.