Perhaps you should try some spelling variations:
communication costs » communication systems, communication efforts, communication skills
technology contact » technology content, technology cost, technology center
information gap » information _, information flow
de development » e development, de developpement, code development
de mobile » does mobile, _ mobile, a mobile
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: technology contact information gap de mobile communication costs de development _ afrique.*.