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
r integration » 3 integration, 2 integration, 4 integration
technology r » technology 1, technology 3, 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 r integration model trade 6.2 communication costs de developpement en afrique.*.