Perhaps you should try some spelling variations:
communication unite » communication united, communication une, communication using
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
information cost » information costs, information lost, information case
et developpement » de developpement, le developpement, test development
developpement de » developpement des, developpement durable
technology 3.1 » technology 1, technology 2.2, technology _
cost trade » costs trade, costly trade, boost trade
de afrique » de l'afrique, en afrique, l afrique
trade 6.2 » trade 2.2, trade 3.2, trade 4.2
unite et » unite _, unite a

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

• Adding a wildcard symbol may retrieve word variants: technology 3.1 information cost trade 6.2 communication unite et developpement de afrique.*.