Perhaps you should try some spelling variations:
development en » developpement en, development menu, development eco
des variation » does variation, de variation, der variation
typology des » typologie des, typologie der, typology _
variation 6 » variation _, variations _, variation des
a youth » _ youth
soe 4 » boe 4, ioe 4
sos 4 » qos 4, sds 4, ses 4

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: "typology des variation 6 ((soe 4) OR (sos 4)) communication a youth development en afrique.~".
• Adding a wildcard symbol may retrieve word variants: typology des variation 6 ((soe 4) OR (sos 4)) communication a youth development en afrique.*.