Perhaps you should try some spelling variations:
waren communication » aware communication, when communication, warning communication
developing human » development human, developing a, developing asia
era information » a information, via information, 4a information
technology era » technology eva, technology e, technology e.g
information 3 » information 2
human africa » roman africa, urban africa, can africa
3 der » _ der, 2 der
3.1 a » 2.1 a

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "technology era information 3 der waren communication ((3.1 a) OR (3.1 _)) developing human africa.~".
• Adding a wildcard symbol may retrieve word variants: technology era information 3 der waren communication ((3.1 a) OR (3.1 _)) developing human africa.*.