Perhaps you should try some spelling variations:
technological frontier » technology frontier
frontier information » further information, premier information, other information
case communication » based communication, scale communication, face communication
das developpement » des developpements, de developpement, du developpement
developpement de » developpement des, developpement durable
information due » information does, information der, information duties
communication 3 » communication _, communication a
de america » _ america, en america, desde america
re case » ce case, he case, care case
due re » die re, due care
3 das » 1 das, 2 das

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

• Adding a wildcard symbol may retrieve word variants: technological frontier information due re case communication 3 das developpement de america.*.