Perhaps you should try some spelling variations:
leur development » leur developpement, your development, spur development
communication 5 » communication _, communication a, communication 3
development en » developpement en, development menu, development eco
des variation » does variation, de variation, der variation
variation im » variation _, variation 6, variation des
5 leur » a leur
boe 4 » bot 4, ioe 4, soe 4
box 4 » box _, box 1, box 2
typologie » typologies, typology

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: "typologie des variation im ((boe 4) OR (box 4)) communication 5 leur development en afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie des variation im ((boe 4) OR (box 4)) communication 5 leur development en afrique.*.