Perhaps you should try some spelling variations:
de developpement » sme development
developpement l » developpement il, developpement la, developpement de
rheologie die » theologie die, rheologie des, archaologie die
die variation » de variation, does variation, der variation
variation 6 » variation _, variations _, variation des
figures a » figures 1, figures part
l afrique » en afrique
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: "rheologie die variation 6 ((figures a) OR (figures _)) communication a de developpement l afrique.~".
• Adding a wildcard symbol may retrieve word variants: rheologie die variation 6 ((figures a) OR (figures _)) communication a de developpement l afrique.*.