Perhaps you should try some spelling variations:
development sectors » development sector, development actors, development section
communication cost » communication costs, communication costa, communications costs
oral communication » personal communication
curve information » care information, core information, clarke information
technology curve » technology course, technology survey, technology courses
information age » information storage, information access, information about
does oral » does formal, does oil
age does » stage does, care does, late does

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

• Adding a wildcard symbol may retrieve word variants: technology curve information age does oral communication cost _ development sectors afrique.*.