Perhaps you should try some spelling variations:
communication costs » communication systems, communication efforts, communication skills
oral communication » mobile communication, _ communication, risk communication
power developments » power development, manpower development, policy developments
technologies more » technologies improve, technologies volume, technologies annex
more information » price information, trade information, chief information
information need » information needs, information based, information age
costs power » cost power, costs per, costing power

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies more information need de oral communication costs power developments _ afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies more information need de oral communication costs power developments _ afrique.*.