Perhaps you should try some spelling variations:
regional development » national development, social development, rural development
1.1 communication » 4.1 communication, 1.3 communication, 1.4 communication
revolution des » revolution der, revolution die, revolution _
technology a » technology 1, technology 3, technology 4
des l'espace » de l'espace, dans l'espace, des espace
l'espace 1.1 » space 1.1, l'espace et, l'espace les
1 afrique » l afrique, en afrique, 1 enrique

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

• Adding a wildcard symbol may retrieve word variants: technology a revolution des l'espace 1.1 communication a regional development 1 afrique.*.