Perhaps you should try some spelling variations:
integration model » integration models, integrative model, interaction model
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
3 integration » die integration, der integration, data integration
technology 3 » technology _, technology 1, technology 4
model trade » modern trade, model traem, model tree
trade 6.2 » trade 2.2, trade 3.2, trade 4.2
costs de » 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 3 integration model trade 6.2 communication costs de developpement en afrique.*.