Perhaps you should try some spelling variations:
oral communication » personal communication
de developpement » sme development
developpement l » developpement il, developpement la, developpement de
ideologien de » ideologien der, ideologie de, ideologie der
de variation » der variation, die variation, does variation
l afrique » en afrique
a tones » a tone, _ stones, a toutes
_ tones » _ tone, _ tonen, _ tons
a de » a die, a der, a des

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "ideologien de variation ((a tones) OR (_ tones)) oral communication a de developpement l afrique.~".
• Adding a wildcard symbol may retrieve word variants: ideologien de variation ((a tones) OR (_ tones)) oral communication a de developpement l afrique.*.