Perhaps you should try some spelling variations:
causes communication » mass communication, crisis communication, assess communication
oil development » rail development, tool development, social development
technologies 1 » technologies _, technologies 4, technologies 2
development co » development case, development china
co africa » can africa, do african, 1 africa
a do » a dot, _ do, a co

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "technologies 1 information ((a do) OR (a d)) causes communication _ oil development co africa.~".
• Adding a wildcard symbol may retrieve word variants: technologies 1 information ((a do) OR (a d)) causes communication _ oil development co africa.*.