Perhaps you should try some spelling variations:
technologies energy » technologies new, technologies any
communication model » communication media, communication costs, communication skills
la communication » _ communication, mass communication, oral communication
development en » development menu, development can, development _
a development » _ development, clean development, asian development
model a » model _, models _

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies energy information _ de la communication model a development en afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies energy information _ de la communication model a development en afrique.*.