Perhaps you should try some spelling variations:
rural communication » rural communications, oral communication, moral communication
development cases » development case, development phases, development based
vi information » i information, ii information, novi information
20 development » 2 development, 2015 development, 2007 development
technology vi » technology vt, technology 4ir, technology 1
cases africa » crises africa, passes africa, rates africa
costs 20 » costs 60, costs 2.3, costs 2.1

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

• Adding a wildcard symbol may retrieve word variants: technology vi information gap _ rural communication costs 20 development cases africa.*.