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
developing basin » developing asia, developing asian, developing based
information 3 » information 2
how personal » from personal, a personal, 1 personal
4 developing » 3 developing
costs 4 » costs _, costs a, costs 4.2
3 how » _ how, 2 how
area. » areas.

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

• Adding a wildcard symbol may retrieve word variants: technologien aids information 3 how personal communication costs 4 developing basin area.*.