Perhaps you should try some spelling variations:
when communication » where communication, open communication, sign communication
technologies 4 » technologies _
1.3 developing » 3.3 developing, 13 developing, 7.3 developing
4 information » 2 information, 1 information
exchange why » exchange _, exchange a, exchange law
developing 1 » developing _, developing a, developing e
costs 1.3 » costs 12.3, costs 14.3, costs 15.3
why when » why women, why we, why what

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information exchange why when communication costs 1.3 developing 1 africa.*.