Perhaps you should try some spelling variations:
communication 3.3.4 » communication 2.3.4, communication 3.3.1, communication 3.4.4
trade communication » true communication, stroke communication, radio communication
integrating data » integration data, integrated data, integrating a
du developpement » de developpement, le developpement, et developpement
developpement en » developpement et, developpement des, developpement de
1 integrating » 10 integrating, _ integrating, 4 integrating
technology 1 » technology _
20 trade » 2 trade, 2012 trade, 2005 trade
3.3.4 du » 3.3.4 die, 3.3.4 das, 3.3.4 _
data 20 » data 2, data 10, data 23

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

• Adding a wildcard symbol may retrieve word variants: technology 1 integrating data 20 trade communication 3.3.4 du developpement en afrique.*.