Perhaps you should try some spelling variations:
persona communication » personal communication, personal communications, personal communicator
developpement en » developpement et, developpement des, developpement de
alma variables » gamma variables, als variables, data variables
typology alma » typology a
variables 6 » variables _, variables 4, variables 3
die persona » die person, de persona, die personale
6 die » 2 die, 3 die, _ die
2 du » 2 de, 2 eu, 2 do
2 zu » 2 zur, 2 zum

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 alma variables 6 die persona communication ((2 du) OR (2 zu)) developpement en afrique.~".
• Adding a wildcard symbol may retrieve word variants: typology alma variables 6 die persona communication ((2 du) OR (2 zu)) developpement en afrique.*.