Perhaps you should try some spelling variations:
information cost » information costs, information lost, information case
und information » fund information, road information, award information
3 communication » 4 communication, de communication, data communication
developing city » developing cities, developing data, developing high
technology und » technology fund, technology used, technology use
3.3 developing » 4 developing, 2 developing, 1 developing
cost debate » class debate, trust debate
city africa » china africa, cults africa
costs 3.3 » costs 2.3, costs 3.5, costs 4.3
debate 3 » debate _, debate 4, debate a

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

• Adding a wildcard symbol may retrieve word variants: technology und information cost debate 3 communication costs 3.3 developing city africa.*.