Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
information center » information centers, information centre, information content
technologies 2.1 » technologies _, technologies 4, technologies a
en communication » open communication, lean communication, when communication
2.1 information » 3.1 information
2.3 developing » 3.3 developing, 2.2 developing, 1.3 developing
developing e » developing _, developing a, developing east
center 4.1 » center 2.1, center 3.1, center 4.4
cost 2.3 » costs 2.3, cost 2.4, cost 2.2
e africa » em africa, de africa, eu africa
4.1 en » 4.1 ein, 4.1 el, 3.1 en

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 center 4.1 en communication cost 2.3 developing e africa.*.