Perhaps you should try some spelling variations:
communication model » communication media
technologies trade » technology trade, technologies case, technologies table
risi communication » risk communication, crisis communication, risk communications
trade information » price information, private information, trade integration
urban development » human development
information 1 » information 2, information 3, information 3.2
model urban » modern urban, modeling urban
de risi » de risk, de risco
1 de » 1 die, 1 der, _ de

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

• Adding a wildcard symbol may retrieve word variants: technologies trade information 1 de risi communication model urban development _ afrique.*.