Perhaps you should try some spelling variations:
communications effects » communication efforts, communication effective, communication aspects
model development » local development, social development, global development
information und » informations und
africa oil » african oil
de data » e data, wide data, de datos
und de » und der, und des, und den

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies _ information und de data communications effects model development africa oil.~.
• Adding a wildcard symbol may retrieve word variants: technologies _ information und de data communications effects model development africa oil.*.