Perhaps you should try some spelling variations:
technological changes » technological change, technological advances
changes information » change information, channels information, chandos information
oral communication » personal communication
communication cost » communication costs, communication costa, communications costs
mine development » sme development, trade development, business development
information et » l'information et, information 2, information 1
de oral » de otras, new oral

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

• Adding a wildcard symbol may retrieve word variants: technological changes information et de oral communication cost mine development _ afrique.*.