Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
technologien aids » technologien als, technologien ad, technologien des
aids information » chandos information, series information
de communication » mobile communication, online communication
1.3 developing » 3.3 developing, 13 developing, 7.3 developing
contents 3rs » contents 3rd, contents 3.1, contents 3.2
developing e » developing _, developing a, developing east
cost 1.3 » cost 11.3, cost 1.2, cost 2.3
e africa » em africa, de africa, eu africa

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

• Adding a wildcard symbol may retrieve word variants: technologien aids information contents 3rs de communication cost 1.3 developing e africa.*.