Perhaps you should try some spelling variations:
left communication » debt communication, et communication, get communication
technologies 2.1 » technologies _, technologies 4, technologies a
2.1 information » 3.1 information
15.3 developing » 1.3 developing, 10.3 developing, 5.3 developing
contents has » contents fase, contents head, contents maps
costs 15.3 » costs 12.3, costs 14.3, costs 5.3
has left » a left, has lost

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

• Adding a wildcard symbol may retrieve word variants: technologies 2.1 information contents has left communication costs 15.3 developing _ africa.*.