Perhaps you should try some spelling variations:
communication model » communication media
technologies dns » technologies dans, technologies de, technologies any
developpement en » developpement et, developpement des, developpement de
dns information » dis information, des information, des informations
1 developpement » de developpement, le developpement, et developpement
about dead » about bad, about debt

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies dns information about dead _ communication model 1 developpement en afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies dns information about dead _ communication model 1 developpement en afrique.*.