Perhaps you should try some spelling variations:
communication costly » communication costs, communications costs, communications forestry
risk communication » _ communication, mobile communication
trade development » software development
debt information » student information, credit information, health information
technology debt » technology ict, technology cost, technology e
information gap » information _, information flow
costly trade » costs trade, country trade, could trade
gap does » far does

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

• Adding a wildcard symbol may retrieve word variants: technology debt information gap does risk communication costly trade development _ afrique.*.