Perhaps you should try some spelling variations:
communication modes » communication model, communication des, communication media
clean development » human development, urban development
development event » development recent, development decent, development seven
technologies can » technologies a, technologies co, technologies _
can information » von information, von informationen
event afrique » en afrique
modes clean » more clean
de mass » de masse, de mais, de masa

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies can information _ de mass communication modes clean development event afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies can information _ de mass communication modes clean development event afrique.*.