Perhaps you should try some spelling variations:
risk communication » _ communication, mobile communication
communication cost » communication costs, communications costs, communication mode
information gap » information _, information flow
development a » development _, development bank, development banks
cost sector » port sector, forest sector, postal sector
de risk » de risi, does risk, edge risk

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies _ information gap de risk communication cost sector development a afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies _ information gap de risk communication cost sector development a afrique.*.