Perhaps you should try some spelling variations:
communication class » communication cross, communication case, communication crisis
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
technologie der » technologie de, technologien des, technologies de
class resource » case resource, access resource, crisis resource
der inflation » core inflation, _ inflation, low inflation
inflation tax » inflation rate, inflation _, inflation target
tax cases » tax bases, tax base, tax codes
cases 4.1 » case 4.1, cases 3.1, cases 4.2
1 afrique » l afrique, en afrique, 1 enrique

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

• Adding a wildcard symbol may retrieve word variants: technologie der inflation tax cases 4.1 communication class resource development 1 afrique.*.