Perhaps you should try some spelling variations:
communication model » communication media
debts integration » dis integration, res integration, eu's integration
integration world » integrating world, integration work, integrated world
technology debts » technology debate, technology data, technology dlt
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
model de » model due, model d, model du
world 1 » world _, world a
1 mass » a mass

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

• Adding a wildcard symbol may retrieve word variants: technology debts integration world 1 mass communication model de developpement en afrique.*.