Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
add communications » aided communications, do communications, radio communications
urban information » can information, bank information, human information
information 10 » information 1, information 11, information 14
des afrique » en afrique, de l'afrique
does add » does aid, does awd, does auld
10 does » 13 does

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

• Adding a wildcard symbol may retrieve word variants: sociology urban information 10 does add communications costs _ developpement des afrique.*.