Perhaps you should try some spelling variations:
oral communication » personal communication
variation series » education series, action series, edition series
development en » developpement en, development menu, development eco
series first » services first, series firm, series from
first oral » first organ, first deal, first drupal
5 some » 2 some, 3 some, 4 some
5 sme » 5 same, _ sme, 3 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: "typology _ variation series first oral communication ((5 sme) OR (5 some)) development en afrique.~".
• Adding a wildcard symbol may retrieve word variants: typology _ variation series first oral communication ((5 sme) OR (5 some)) development en afrique.*.