Perhaps you should try some spelling variations:
oral communication » personal communication
does development » dams development, ides development, smes development
development de » development d, development ds, developpement de
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
variation 6 » variation _, variations _, variation des
de afrique » de l'afrique, en afrique, l afrique
u.s oral » u.s oil
a does » 2 does, 4 does, 1 does
6 u.s » _ u.s, a u.s, 4 u.s

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

• Adding a wildcard symbol may retrieve word variants: typologie de variation 6 u.s oral communication a does development de afrique.*.