Perhaps you should try some spelling variations:
communication code » communications code, communication cote, communication mode
4.2 communication » 4.2 communications, 3.2 communication, 4.1 communication
technology trade » technology trends, technology transfer, technology transfers
trade relations » trade regulation
development de » development d, development ds, developpement de
relations und » relation und, relations under, relationen und
de afrique » de l'afrique, en afrique, l afrique
und price » fund price, usd price, fund prices
price 4.2 » prices 4.2, price 4.4, price 2.2
code a » code _, code 2

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

• Adding a wildcard symbol may retrieve word variants: technology trade relations und price 4.2 communication code a development de afrique.*.