Perhaps you should try some spelling variations:
information centers » information contents, information officers
communication cost » communication costs, communication costa, communications costs
technologien als » technologien des, technologien fur, technologien und
als information » als informations, aids information, laws information
3 communication » 4 communication, de communication, data communication
3.3 developing » 4 developing, 2 developing, 1 developing
centers hold » centers help, enter hold, center how
cost 3.3 » cost 3.2, cost 2.3, cost 3.4
hold 3 » hold _, hold a, bold 3

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

• Adding a wildcard symbol may retrieve word variants: technologien als information centers hold 3 communication cost 3.3 developing _ africa.*.