Perhaps you should try some spelling variations:
mobile telecommunication » mobile communication, mobile communications, rural telecommunications
development en » developpement en, development menu, development eco
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
dem mobile » does mobile, stem mobile, them mobile
a sme » _ sme, 5 sme, a see
3 sme » 3 same, _ sme, 3 smt

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 _ dem mobile telecommunication ((a sme) OR (3 sme)) development en afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie de variation _ dem mobile telecommunication ((a sme) OR (3 sme)) development en afrique.*.