Perhaps you should try some spelling variations:
communication methods » communication media, communication model
oral communication » personal communication
clean development » human development, urban development
technologies art » technologies part, technologies a, technologies bit
art information » party information, smart information, ct information
development en » developpement en, development menu, development eco
methods clean » methods can, methods cell
de oral » de otras, new oral

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

• Adding a wildcard symbol may retrieve word variants: technologies art information _ de oral communication methods clean development en afrique.*.