Perhaps you should try some spelling variations:
persona communication » personal communication, personal communications, personal communicator
derveloping areas » developing areas, developing real, developing asia
technologie der » technologie de, technologien des, technologies de
der information » insider information, sector information, labor information
3.3 derveloping » 3.3 developing, 3.2 developing, 1.3 developing
information 3 » information 2
areas arenas » areas trends, seas areas
der persona » der personal, der person, de persona
costs 3.3 » costs 2.3, costs 3.5, costs 4.3
3 der » _ der, 2 der

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

• Adding a wildcard symbol may retrieve word variants: technologie der information 3 der persona communication costs 3.3 derveloping areas arenas.*.