Perhaps you should try some spelling variations:
power communication » your communication, fiber communication, better communication
dams development » dam development, gas development, ads development
communication 4 » communication _, communication a, communication 3
development en » developpement en, development menu, development eco
variation 3 » variation 6, variation 5, variation a
apology de » apologia de, apology mea, apology _
der power » den power, peer power, dc power
4 dams » 4 das, _ dams, 4 dam

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: "apology de ((variation 3) OR (variation _)) der power communication 4 dams development en afrique.~".
• Adding a wildcard symbol may retrieve word variants: apology de ((variation 3) OR (variation _)) der power communication 4 dams development en afrique.*.