Perhaps you should try some spelling variations:
communication costs » communication systems, communication efforts, communication skills
technologies could » technologies volume
could information » child information, pooled information, road information
de developpement » _ development, a development, sme development
developpement en » development _, development a, development co
flows does » flows do
costs de » costs per, costs _, costs a

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

• Adding a wildcard symbol may retrieve word variants: technologies could information flows does _ communication costs de developpement en afrique.*.