Perhaps you should try some spelling variations:
telecommunications costly » telecommunications cost, telecommunication cost, telecommunication costa
trade development » software development
variation 11.6 » variation 1.1.1, variations 10.1.6, variation 10.4.6
development en » developpement en, development menu, development eco
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
costly trade » costs trade, country trade, costly than
11.6 ex » 11.6 key

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

• Adding a wildcard symbol may retrieve word variants: typologie de variation 11.6 ex _ telecommunications costly trade development en afrique.*.