Perhaps you should try some spelling variations:
yemen communication » yemen communications, human communication, open communication
information 4.3.2 » information 4.3.3, information 2.3.2, information 3.2
communication can » communication canada, communication china, communication 3
developpement la » developpement de, developpement et, developpement du
technologies 2 » technologies _, technologies 4
la afrique » l afrique, la fabrique, en afrique
4.3.2 die » 3.3.2 die
die yemen » die demenz, die themen, die memex

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information 4.3.2 die yemen communication can _ developpement la afrique.*.