Perhaps you should try some spelling variations:
change information » chandos information, trade information
oral communication » personal communication
technology change » technological change, technological changes
information et » l'information et, information 2, information 1
a afrique » l afrique, en afrique
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: technology change information et de oral communication _ human development a afrique.~.
• Adding a wildcard symbol may retrieve word variants: technology change information et de oral communication _ human development a afrique.*.