Perhaps you should try some spelling variations:
open communication » human communication, 3 communication, 4 communication
development menu » development mega, development min, development manuel
sme development » trade development
menu afrique » en afrique
c variation » _ variation, 2 variation, 4 variation
topology c » topology _, topology 4, topology 32
6 der » _ der, 3 der, 1 der
2 der » _ der
a sme » _ sme, 3 sme, 5 sme

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: "topology c variation ((6 der) OR (2 der)) open communication a sme development menu afrique.~".
• Adding a wildcard symbol may retrieve word variants: topology c variation ((6 der) OR (2 der)) open communication a sme development menu afrique.*.