Perhaps you should try some spelling variations:
based calculations » based calculation, hand calculations, baseline calculations
calculations phase » calculations charge, calculations based, calculations chapter
data communication » data communications
le developpement » de developpement, sme development
developpement la » developpement de, developpement et, developpement du
la afrique » l afrique, la fabrique, en afrique
phase do » phase de, phase der, phase des
do data » eo data, go data, geo data

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

• Adding a wildcard symbol may retrieve word variants: technology based calculations phase do data communication _ le developpement la afrique.*.