Perhaps you should try some spelling variations:
communication model » communication media
technologies trade » technology trade, technologies case, technologies table
de developpement » sme development
developpement de » developpement des, developpement durable
integration als » integration a, integration 3, integration 4
als code » als mode, gams code, als care
model de » model due, model d, model du

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies trade integration als code _ communication model de developpement de l'afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies trade integration als code _ communication model de developpement de l'afrique.*.