Perhaps you should try some spelling variations:
guinea communications » business communications, online communications, data communications
developpement l » developpement il, developpement la, developpement de
variation de » variation des, variation der, variation due
den guinea » new guinea
l afrique » en afrique
de den » die den, der den, de don
a das » 1 das, 3 das, _ das
2 das » 1 das
typologie » typologies, typology

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 _ variation de den guinea communications ((a das) OR (2 das)) developpement l afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie _ variation de den guinea communications ((a das) OR (2 das)) developpement l afrique.*.