Perhaps you should try some spelling variations:
5.4 communication » de communication, data communication
power development » water development, career development, hydropower development
development en » developpement en, development menu, development eco
de variation » der variation, die variation, does variation
typology de » typology _, typology 6, typology a
variation 6 » variation _, variations _, variation des
so 5.4 » go 5.4, so 5.2, so 5.3
6 so » 16 so, _ so, 6 co

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

• Adding a wildcard symbol may retrieve word variants: typology de variation 6 so 5.4 communication _ power development en afrique.*.