Perhaps you should try some spelling variations:
service telecommunication » mobile telecommunication, services communication, rural telecommunication
development en » developpement en, development menu, development eco
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
de service » de services, e service, debt service
a sme » _ sme, 3 sme, a see
5 sme » 5 some, 5 same, _ sme

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 de variation _ de service telecommunication ((a sme) OR (5 sme)) development en afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie de variation _ de service telecommunication ((a sme) OR (5 sme)) development en afrique.*.