Perhaps you should try some spelling variations:
rural development » social development
communication 3.3 » communication _, communication a, communication 1
80 communication » 10 communication, 10 communications, de communication
development use » development using, development under, development unit
technologies 2 » technologies _, technologies 4
3.3 rural » 3.2 rural, 3.4 rural, 4.3 rural
die 80 » die 10

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information _ die 80 communication 3.3 rural development use africa.*.