Perhaps you should try some spelling variations:
power development » water development, career development, hydropower development
5.4 communication » de communication, data communication
communication 5 » communication _, communication a, communication 3
development en » developpement en, development menu, development eco
typology de » typology _, typology 6, typology a
variation 6 » variations _, variation des
5 power » 2 power, 3 power, 4 power
so 5.4 » go 5.4, so 5.2, so 5.3

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "typology de ((variation 6) OR (variation _)) so 5.4 communication 5 power development en afrique.~".
• Adding a wildcard symbol may retrieve word variants: typology de ((variation 6) OR (variation _)) so 5.4 communication 5 power development en afrique.*.