Perhaps you should try some spelling variations:
communication case » communications case, communication based, communication phase
oral communication » personal communication
information 2.1.3 » information 2.1.5, information 2.1.6, information 2.2.3
technologien zur » technologien fur, technologien des, technologien und
developing basin » developing asia, developing asian, developing based
zur information » fur information, your information, der information
3 developing » 3 development
basin access » basic access, gain access, based access
2.1.3 der » 2.1.2 der, 2.1.1 der, 5.1.3 der
der oral » der moral, der ort, der orte
case 3 » case 1, case 2

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

• Adding a wildcard symbol may retrieve word variants: technologien zur information 2.1.3 der oral communication case 3 developing basin access.*.