Perhaps you should try some spelling variations:
oral communication » personal communication
urban development » human development
technologies 1 » technologies _, technologies 4, technologies 2
information et » l'information et, information 2, information 1
costs urban » cost urban, across urban, crisis urban
de oral » de otras, new oral

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies 1 information et de oral communication costs urban development _ afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies 1 information et de oral communication costs urban development _ afrique.*.