Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
data communication » data communications
typologies first » typologies art, typologie fur, typologie wird
development desd » development ssesd, development does, development deal
first variation » first valuation, first vaccination, first evaluation
variation over » variation der, variation notes, variation des
desd afrique » en afrique, de l'afrique
over them » over three, over tbm, over ten
them data » other data, them eat, em data
cost gas » cost base, cost bias, cost a

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

• Adding a wildcard symbol may retrieve word variants: typologies first variation over them data communication cost gas development desd afrique.*.