Perhaps you should try some spelling variations:
cat communications » data communications, chad communications, haiti communications
developpements l » developpements de, developpement il, developpement la
des variation » does variation, de variation, der variation
l afrique » en afrique
does cat » does cash, does city, does a
en des » en del, en dos
en der » en del
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 des variation _ does cat communications ((en des) OR (en der)) developpements l afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie des variation _ does cat communications ((en des) OR (en der)) developpements l afrique.*.