Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
sub developpement » du developpement, au developpement, ou developpement
math information » catch information, much information, health information
developpement en » developpement et, developpement des, developpement de
technology math » technology paths, technology mit, technology make
information 3 » information 2
der mobile » der mobilen, der mobil, does mobile
3 der » _ der, 2 der

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

• Adding a wildcard symbol may retrieve word variants: technology math information 3 der mobile communications costs sub developpement en afrique.*.