Perhaps you should try some spelling variations:
information centers » information contents, information officers
communication cost » communication costs, communication costa, communications costs
technologien aids » technologien als, technologien ad, technologien des
aids information » chandos information, series information
ec communication » de communication, 3 communication, 4 communication
1.2 developing » 12.2 developing, 13.2 developing, 2.2 developing
developing em » developing e, developing eq, developing amp
centers how » center how, centers hold, century how
em africa » 1 africa
cost 1.2 » cost 3.2, cost 12, cost 2.2
how ec » how eu, how ecec, how ecte

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

• Adding a wildcard symbol may retrieve word variants: technologien aids information centers how ec communication cost 1.2 developing em africa.*.