Perhaps you should try some spelling variations:
personen communication » personal communication, personal communications, prone communication
technologien aids » technologien als, technologien ad, technologien des
aids information » chandos information, series information
developing based » development based, developing asia, developing east
information und » informations und
und personen » und personelle, der personen
4 developing » 3 developing
based areal » based real, base areas, based animal
und und » und un, und uns
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 und und personen communication costs 4 developing based areal.*.