Perhaps you should try some spelling variations:
4 communication » 3 communication, 5.4 communication, de communication
development en » developpement en, development menu, development eco
typology des » typologie des, typologie der, typology _
variation 6 » variations _, variation des
a youth » _ youth
soe 4 » boe 4, ioe 4, sos 4

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

• Performing a fuzzy search may retrieve terms with similar spellings: typology des ((variation 6) OR (variation _)) soe 4 communication a youth development en afrique.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "typology des ((variation 6) OR (variation _)) soe 4 communication a youth development en afrique.*".