Perhaps you should try some spelling variations:
communication efforts » communication networks, communications networks, communication network
oral communication » mobile communication, _ communication, risk communication
information age » information gaps, information laws, information _
technologies a » technologies _
a information » _ information, land information, award information
development a » development _, development bank, development banks

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies a information age de oral communication efforts _ development a afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies a information age de oral communication efforts _ development a afrique.*.