Perhaps you should try some spelling variations:
device communication » services communication, voice communication, mobile communication
de developpement » sme development
developpement de » developpement des, developpement durable
des variation » does variation, de variation, der variation
de afrique » de l'afrique, en afrique, l afrique
6 loss » 3 loss, a loss, 6 lost
2 loss » 3 loss, a loss, 2 lose
a de » a die, a der, a des
typologie » typologies, typology

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

• Performing a fuzzy search may retrieve terms with similar spellings: typologie des variation ((6 loss) OR (2 loss)) device communication a de developpement de afrique.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "typologie des variation ((6 loss) OR (2 loss)) device communication a de developpement de afrique.*".