Perhaps you should try some spelling variations:
communication modes » communication model, communication des, communication media
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
information oder » information der, information model, information code
d1 developpement » de developpement, du developpement, le developpement
developpement de » developpement des, developpement durable
technology 3.1 » technology 1, technology 2.2, technology _
oder trade » der trade, border trade, modern trade
de afrique » de l'afrique, en afrique, l afrique
trade 6.2 » trade 2.2, trade 3.2, trade 4.2
modes d1 » modes de, modes 1, modes 3.1

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

• Adding a wildcard symbol may retrieve word variants: technology 3.1 information oder trade 6.2 communication modes d1 developpement de afrique.*.