Perhaps you should try some spelling variations:
communication models » communications models, communication model, communication modes
oral communication » personal communication
technologies new » technologies _, technologies 4, technologies 2
new information » 2 information
development en » developpement en, development menu, development eco
debt oral » debt moral, debt oil
models a » models 1, models 3

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies new information flows debt oral communication models a development en afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies new information flows debt oral communication models a development en afrique.*.