Perhaps you should try some spelling variations:
communication case » communications case, communication based, communication phase
3.2 communication » 3 communication, 2.3 communication, de communication
der developpement » de developpement, des developpements, leur developpement
developpement en » developpement et, developpement des, developpement de
inflation risk » inflation rate
risk prices » risk price, risk priced, rice prices
prices 3.2 » price 3.2, prices 3.1, prices 4.2
case der » case des, case under, phase der

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

• Adding a wildcard symbol may retrieve word variants: technology _ inflation risk prices 3.2 communication case der developpement en afrique.*.