Perhaps you should try some spelling variations:
communication cost » communication costs, communications costs, communication mode
technologies new » technologies _, technologies a
la communication » _ communication, mass communication, oral communication
development case » development bank, development a, development aid
new information » _ information, energy information, chief information
per development » power development, spur development, power developments

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

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