Perhaps you should try some spelling variations:
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
information lost » information loss, information cost, information list
developing east » development east, developing a, developing asia
technology 1 » technology _
4 developing » 3 developing
lost debate » lost decade, los debates, lost decades
east africa » west africa
debate 4.1 » debates 4.1, debate 2.1, debate 4.2
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology 1 information lost debate 4.1 communication costs 4 developing east africa.*.