Perhaps you should try some spelling variations:
communication case » communications case, communication based, communication phase
3.1 communication » 3.1 communications, 3.2 communication, 3.5 communication
das developpement » des developpements, de developpement, du developpement
developpement la » developpement de, developpement et, developpement du
one information » more information, age information, die information
technology one » technology other, technology o140, technology 1
prices 3.1 » prices 2.1, prices 3.2, prices 2.3.1
la afrique » l afrique, la fabrique, en afrique
case das » case des, case case, case data

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

• Adding a wildcard symbol may retrieve word variants: technology one information gap prices 3.1 communication case das developpement la afrique.*.