Perhaps you should try some spelling variations:
power development » water development, career development, hydropower development
4 communication » 3 communication, 5.4 communication, de communication
development en » developpement en, development menu, development eco
des variation » does variation, de variation, der variation
variation der » variation des, variation bei, variation _
der so » der sog, der soll
so 4 » soe 4, sos 4, so _

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: "(typologie OR typology) des variation der so 4 communication a power development en afrique.~".
• Adding a wildcard symbol may retrieve word variants: (typologie OR typology) des variation der so 4 communication a power development en afrique.*.