Perhaps you should try some spelling variations:
information centre » information centers, information contents
oral communication » personal communication
communication cost » communication costs, communication costa, communications costs
developing cpia » developing china, developing asia, developing cil
technologies 2 » technologies _, technologies 4
2.2 developing » 3.2 developing, 3.3 developing, 2.2 development
centre der » centre de, centre des, centres de
der oral » der moral, der ort, der orte
cost 2.2 » costs 2.2, cost 2.4, cost 3.2

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information centre der oral communication cost 2.2 developing cpia africa.*.