Perhaps you should try some spelling variations:
rural communications » oral communication, rural telecommunications, cultural communications
information centers » information contents, information officers
communications 2.3 » communication 2.3, communications 2.1, communications 2.2
developing east » development east, developing a, developing asia
technologies 2 » technologies _, technologies 4
24 developing » 4 developing, 2 developing, 14 developing
east african » east africa, west african, west africa
centers 3.3 » centers 3.8, centers 4.3, century 3.3
3.3 rural » 3.2 rural, 3.4 rural, 4.3 rural
2.3 24 » 2.3 2.4, 2.3 2d

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information centers 3.3 rural communications 2.3 24 developing east african.*.