Perhaps you should try some spelling variations:
integration wages » integration wage, integration wege, integration wie
4.2 communication » 4.2 communications, 3.2 communication, 4.1 communication
21st integration » post integration, test integration, 2 integration
le developpement » de developpement, sme development
developpement de » developpement des, developpement durable
technology 21st » technology 2.1.1, technology 2.1.2, technology 2.1.3
wages trade » wages race, wharves trade, states trade
de afrique » de l'afrique, en afrique, l afrique
trade 4.2 » trade 2.2, trade 3.2, trade 4.1
costs le » 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 21st integration wages trade 4.2 communication costs le developpement de afrique.*.