Perhaps you should try some spelling variations:
service telecommunication » mobile telecommunication, services communication, rural telecommunication
telecommunication a » telecommunication _, telecommunication law, telecommunication el
der developpement » de developpement, des developpements, leur developpement
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
bus service » bus services
des afrique » en afrique, de l'afrique
a 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: typologie de variation _ bus service telecommunication a der developpement des afrique.*.