Perhaps you should try some spelling variations:
rural development » social development
2.1 communication » 2.14 communication, 2.3 communication, 2.7 communication
technology case » technology based, technology can, technology change
case evaluation » care evaluation, based evaluation, use evaluation
evaluation data » evaluating data, evaluation das, evaluation update
communication 1 » communication _, communication a, communication 3
development l » development li, development 1, development law
data scarce » data source, data sparse, data sources
scarce 2.1 » space 2.1, scale 2.1
l afrique » en afrique
1 rural » 10 rural, a rural, 2 rural

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

• Adding a wildcard symbol may retrieve word variants: technology case evaluation data scarce 2.1 communication 1 rural development l afrique.*.