Perhaps you should try some spelling variations:
communications models » communication model, communication modes, communicating model
development aid » development a, development africa, development agenda
technologies 2 » technologies _, technologies 4
2 informations » 2 information, 4.2 informations, des informations
aid africa's » aids africa's, did africa's, aid african
und debt » fund debt, bond debt, und der
models a » models 1, models 3

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 informations und debt data communications models a development aid africa's.*.