Perhaps you should try some spelling variations:
oral communication » personal communication
development des » development does, development desd, development ds
typologie does » typologie des, typologie der, typologie cices
does variation » de variation, der variation, die variation
variation 6 » variation _, variations _, variation des
des afrique » en afrique, de l'afrique
debt oral » debt moral, debt oil
6 debt » 3 debt, 4 debt
2 ads » _ ads, 2 adr, 2 als

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

• Performing a fuzzy search may retrieve terms with similar spellings: typologie does variation 6 debt oral communication ((2 ads) OR (2 abs)) development des afrique.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "typologie does variation 6 debt oral communication ((2 ads) OR (2 abs)) development des afrique.*".