Perhaps you should try some spelling variations:
calculation module » calculation model, calculation source, calculation procedure
der communication » de communication, under communication, debt communication
clean development » human development, urban development
development east » development southeast, development 1
east afrique » east africa, east african, en afrique
costs clean » costs clear
module 1 » module _, modules _
1 der » _ der, 2 der, 3 der

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

• Adding a wildcard symbol may retrieve word variants: technologies _ calculation module 1 der communication costs clean development east afrique.*.