Perhaps you should try some spelling variations:
communication model » communication media
technologies trade » technology trade, technologies case, technologies table
developpement de » developpement des, developpement durable
2 communication » 3 communication, 4 communication, 1 communication
1 developpement » de developpement, le developpement, et developpement
code 2 » code _, code a

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 a code 2 communication model 1 developpement de l'afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies trade integration a code 2 communication model 1 developpement de l'afrique.*.