Perhaps you should try some spelling variations:
communications series » communication series, communications services, communication services
cell communications » cell communication, health communications, rural communications
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
variation using » variations during, variation und, variation among
des variation » does variation, de variation, der variation
typology des » typologie des, typologie der, typology _
using rates » using gated, using rules, pumping rates
series de » series d, series e, series new

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

• Adding a wildcard symbol may retrieve word variants: typology des variation using rates cell communications series de developpement en afrique.*.