Perhaps you should try some spelling variations:
telecommunications costs » telecommunications cost, telecommunication cost, telecommunication costa
trade development » software development
development en » developpement en, development menu, development eco
des variation » does variation, de variation, der variation
variation 3.4 » variation 3.3, variation 3.2, variation 6.4
typology des » typologie des, typologie der, typology _
costs trade » costly trade
3.4 ex » 3.4 el, 3.4 eq, 3.4 et

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

• Adding a wildcard symbol may retrieve word variants: typology des variation 3.4 ex _ telecommunications costs trade development en afrique.*.