Perhaps you should try some spelling variations:
personal communication » interpersonal communication
technologien aids » technologien als, technologien ad, technologien des
aids information » chandos information, series information
information case » information based, information can, information costs
developing basic » developing asia, developing based, developing brazil
des personal » des personals, der personal, das personal
4 developing » 3 developing
case des » cases des, case das, phase des
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologien aids information case des personal communication costs 4 developing basic ideas.*.