Perhaps you should try some spelling variations:
communication series » communication services, communication systems, communication skills
data communication » data communications
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
variation using » variations during, variation und, variation among
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
using rates » using gated, using rules, pumping rates
rates data » rate data, states data, cases data
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: typologie de variation using rates data communication series de developpement en afrique.*.