Perhaps you should try some spelling variations:
oral communication » personal communication
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
variation among » starvation among, formation among, variation von
theologie und » ideologie und, technologie und, theorie und
und variation » und variationen, 2 variation, 4 variation
among new » among jews, among low, among eu
new oral » new moral, knew moral, new rural
a de » a die, a der, a des

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

• Adding a wildcard symbol may retrieve word variants: theologie und variation among new oral communication a de developpement en afrique.*.