Perhaps you should try some spelling variations:
technologien chandos » technological changes, technologies changing, technologies chapter
chandos information » change information
communication cost » communication costs, communication costa, communications costs
do communication » do communications, de communication, ngo communication
3.3 developing » 4 developing, 2 developing, 1 developing
developing a » developing _
4.2 debt » 4.2 der, 4.2 deep, 2.5 debt
cost 3.3 » cost 3.2, cost 2.3, cost 3.4
debt do » debt gdp, debt how
a areas » 1 areas, 2 areas, 4 areas

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

• Adding a wildcard symbol may retrieve word variants: technologien chandos information 4.2 debt do communication cost 3.3 developing a areas.*.