Perhaps you should try some spelling variations:
technologies case » technologies based, technologies can, technologies create
formulation where » formulation over, formulation des, calculation where
case formulation » basic formulation, chain formulation, space formulation
de communication » mobile communication, online communication
development east » development southeast, development 1
communication 3 » communication _, communication a
3 development » 2 development
east afrique » east africa, east african, en afrique
where do » where _
do de » do we, dx de

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

• Adding a wildcard symbol may retrieve word variants: technologies case formulation where do de communication 3 3 development east afrique.*.