Perhaps you should try some spelling variations:
technologien change » technological change, technology change, technological changes
information centers » information contents, information officers
change information » chandos information, trade information
communication cost » communication costs, communication costa, communications costs
des communication » les communications, nets communication, c's communication
1 developing » 3 developing, 4 developing, 2 developing
developing 1 » developing _, developing a, developing e
centers 3 » centers _, centers a, centers 3.3
cost 1 » cost 12, cost 15, cost _
3 des » 3 der, 3 das, a des

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

• Adding a wildcard symbol may retrieve word variants: technologien change information centers 3 des communication cost 1 developing 1 africa.*.