Perhaps you should try some spelling variations:
service telecommunication » mobile telecommunication, services communication, rural telecommunication
telecommunication a » telecommunication _, telecommunication law, telecommunication el
des development » does development, ides development, dams development
development en » developpement en, development menu, development eco
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
variation 6 » variation _, variations _, variation des
6 debt » 3 debt, 4 debt
a des » a der, a das

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

• Adding a wildcard symbol may retrieve word variants: typologie de variation 6 debt service telecommunication a des development en afrique.*.